Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
47 results
Oct 8, 2026An uncontrolled search path element vulnerability in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to execute arbitrary cCVE-2026-107615 · Other software · GlavSoft · reported by 33c584b5-0579-4c06-b2a0-8d8329fcab9cHigh 7.8
An uncontrolled search path element vulnerability in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to execute arbitrary code with SYSTEM privileges. DynamicLibrary::init() (and ThemeLib) load screenhooks32.dll / screenhooks64.dll with LoadLibrary() using a bare file name and no LOAD_LIBRARY_SEARCH_* flags, so the TightVNC service follows the default DLL search order and loads an attacker-planted DLL from a writable directory earlier in that order (for example, an installation directory with permissive ACLs).
- Product
- TightVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsourceforge.nettightvnc.com
Oct 8, 2026An integer underflow in WinCursorShapeUtils::trimTransparent() in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to crash CVE-2026-107614 · Other software · GlavSoft · reported by 33c584b5-0579-4c06-b2a0-8d8329fcab9cMedium 6.1
An integer underflow in WinCursorShapeUtils::trimTransparent() in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to crash the server, and potentially read out-of-bounds memory, by causing a cursor shape with a width or height of zero to be processed on the DXGI capture path. The loop bound width - 1 wraps to 0xFFFFFFFF, producing an access roughly 4 GB beyond the 64 KB cursor buffer; a monochrome cursor of height 1 also becomes 0 because getCursorHeight() halves the height in place.
- Product
- TightVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsourceforge.nettightvnc.com
Oct 8, 2026A NULL pointer dereference vulnerability in the Win8ScreenDriver component of GlavSoft TightVNC Server for Windows before 2.8.88 allows an attacker to crash theCVE-2026-107613 · Other software · GlavSoft · reported by 33c584b5-0579-4c06-b2a0-8d8329fcab9cMedium 5.9
A NULL pointer dereference vulnerability in the Win8ScreenDriver component of GlavSoft TightVNC Server for Windows before 2.8.88 allows an attacker to crash the server, causing a denial of service. When re-initialization of the DXGI Desktop Duplication driver fails in applyNewScreenProperties() (for example after a GPU reset, display hot-plug or session change), m_drvImpl is left NULL and is subsequently dereferenced without a check by executeDetection(), getScreenBuffer(), grabFb(), getScreenPropertiesChanged() and getCursorPosition().
- Product
- TightVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsourceforge.nettightvnc.com
Oct 8, 2026Incorrect permission assignment in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to read or overwrite the inter-process cCVE-2026-107612 · Other software · GlavSoft · reported by 33c584b5-0579-4c06-b2a0-8d8329fcab9cHigh 7.8
Incorrect permission assignment in GlavSoft TightVNC Server for Windows before 2.8.88 allows a local authenticated user to read or overwrite the inter-process communication handles used between the TightVNC service and its desktop server process. The named shared memory segment in the Global\ namespace that carries the pipe HANDLE values is created with a NULL DACL, and its name is derived from a time-seeded srand(time(0)) value that is predictable to one-second granularity. A low-privileged local process can open the mapping and tamper with the IPC channel of a service running as SYSTEM, potentially leading to disclosure of session data, privilege escalation, or denial of service.
- Product
- TightVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsourceforge.nettightvnc.com
Oct 8, 2026An out-of-bounds read vulnerability in the ZRLE decoder of GlavSoft TightVNC Viewer for Windows before 2.8.88 allows a malicious or compromised VNC server to reCVE-2026-107611 · Other software · GlavSoft · reported by 33c584b5-0579-4c06-b2a0-8d8329fcab9cHigh 7.1
An out-of-bounds read vulnerability in the ZRLE decoder of GlavSoft TightVNC Viewer for Windows before 2.8.88 allows a malicious or compromised VNC server to read heap memory beyond the palette allocation and crash the viewer by sending ZRLE-encoded tiles whose palette indices exceed the declared palette size. readPaletteRleTile() and readPackedPaletteTile() use the attacker-supplied index to look up colours without validating it against the palette size; out-of-bounds heap data is copied into the framebuffer (garbled display) or the read faults, terminating the viewer.
- Product
- TightVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsourceforge.nettightvnc.com
Sep 24, 2026Authentication bypass vulnerability in the password authentication mechanism of the Qt VNC Server module.CVE-2026-79680 · Other software · qt · reported by a59d8014-47c4-4630-ab43-e1b13cbe58e3Medium 4.5
Authentication bypass vulnerability in the password authentication mechanism of the Qt VNC Server module. An attacker using a specially modified VNC client that violates the RFB protocol can bypass Qt VNC Server's password authentication and gain unauthorized remote access to the shared application, compromising the confidentiality and integrity of the session.
- Product
- qt
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcodereview.qt-project.orgwiki.qt.io
May 26, 2026Eppendorf BioFlo 320 is vulnerable due to VNC server using a hard-coded password.CVE-2026-7251 · Other software · Eppendorf · reported by ics-cert@hq.dhs.govCritical 9.3
Eppendorf BioFlo 320 is vulnerable due to VNC server using a hard-coded password. If a remote attacker knows the network address of any BioFlo 320 model with remote access enabled, they can gain full control of the user interface by using this password. Once connected, the attacker would have full access to all control panel features for the BioFlo 320. VNC traffic is not encrypted.
- Product
- BioFlo 320
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 11, 2026Neat VNC is a VNC server library.CVE-2026-42859 · Other software · any1 · reported by GitHubHigh 8.1
Neat VNC is a VNC server library. Prior to 0.9.6, a pre-authentication stack buffer overflow exists in neatvnc in the RSA-AES security type handler. An unauthenticated remote attacker who can reach the VNC listening socket can send a crafted security type 5 (RSA-AES) or security type 129 (RSA-AES-256) handshake with an oversized client RSA public key, causing rsa_aes_send_challenge in src/auth/rsa-aes.c to overflow a 1024-byte on-stack buffer when encrypting the server challenge. This results in at least a denial of service via server crash. This vulnerability is fixed in 0.9.6.
- Product
- neatvnc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 5, 2026UltraVNC Viewer 1.2.4.0 contains a denial of service vulnerability that allows attackers to crash the application by manipulating VNC Server input.CVE-2020-37134 · Other software · UltraVNC Team · reported by VulnCheckMedium 4.6
UltraVNC Viewer 1.2.4.0 contains a denial of service vulnerability that allows attackers to crash the application by manipulating VNC Server input. Attackers can generate a malformed 256-byte payload and paste it into the VNC Server connection dialog to trigger an application crash.
- Product
- UltraVNC Viewer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordexploit-db.comuvnc.com
Jul 3, 2025All communication between the VNC server and client(s) is unencrypted.CVE-2025-27457 · Other software · Endress+Hauser · reported by psirt@sick.deMedium 6.5
All communication between the VNC server and client(s) is unencrypted. This allows an attacker to intercept the traffic and obtain sensitive data.
- Product
- Endress+Hauser MEAC300-FNADE4
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 29, 2025The CS5000 Fire Panel is vulnerable due to a hard-coded password that runs on a VNC server and is visible as a string in the binary responsible for running VNCVE-2025-46352 · Other software · Consilium Safety · reported by ics-cert@hq.dhs.govCritical 9.3
The CS5000 Fire Panel is vulnerable due to a hard-coded password that runs on a VNC server and is visible as a string in the binary responsible for running VNC. This password cannot be altered, allowing anyone with knowledge of it to gain remote access to the panel. Such access could enable an attacker to operate the panel remotely, potentially putting the fire panel into a non-functional state and causing serious safety issues.
- Product
- CS5000 Fire Panel
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcisa.govconsiliumsafety.com
Jan 12, 2024A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages.CVE-2023-6683 · Other software · Red Hat · reported by Red HatMedium 6.5
A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. The qemu_clipboard_request() function can be reached before vnc_server_cut_text_caps() was called and had the chance to initialize the clipboard peer, leading to a NULL pointer dereference. This could allow a malicious authenticated VNC client to crash QEMU and trigger a denial of service.
- Product
- Red Hat Enterprise Linux 8
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.comaccess.redhat.com
Dec 19, 2023Apache Guacamole 1.5.3 and older do not consistently ensure that values received from a VNC server will not result in integer overflow.CVE-2023-43826 · Websites & servers · Apache Software Foundation · reported by security@apache.orgHigh 7.5
Apache Guacamole 1.5.3 and older do not consistently ensure that values received from a VNC server will not result in integer overflow. If a user connects to a malicious or compromised VNC server, specially-crafted data could result in memory corruption, possibly allowing arbitrary code to be executed with the privileges of the running guacd process. Users are recommended to upgrade to version 1.5.4, which fixes this issue.
- Product
- Apache Guacamole
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comlists.apache.org
Sep 13, 2023A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages.CVE-2023-3255 · Other software · Red Hat · reported by Red HatMedium 6.5
A flaw was found in the QEMU built-in VNC server while processing ClientCutText messages. A wrong exit condition may lead to an infinite loop when inflating an attacker controlled zlib buffer in the `inflate_buffer` function. This could allow a remote authenticated client who is able to send a clipboard to the VNC server to trigger a denial of service.
- Product
- Red Hat Enterprise Linux 8
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.comaccess.redhat.com
Jul 11, 2023A flaw was found in the QEMU built-in VNC server.CVE-2023-3354 · Other software · Red Hat · reported by Red HatHigh 7.5
A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.
- Product
- Red Hat Enterprise Linux 6
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.combugzilla.redhat.com
Oct 17, 2022An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the extended format.CVE-2022-3165 · Other software · Qemu · reported by Red HatMedium 6.5
An integer underflow issue was found in the QEMU VNC server while processing ClientCutText messages in the extended format. A malicious client could use this flaw to make QEMU unresponsive by sending a specially crafted payload message, resulting in a denial of service.
- Product
- Qemu
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgitlab.comlists.fedoraproject.org
Sep 30, 2022RealVNC VNC Server before 6.11.0 and VNC Viewer before 6.22.826 on Windows allow local privilege escalation via MSI installer Repair mode.CVE-2022-41975 · Other software · Realvnc · reported by MITREHigh 7.8
RealVNC VNC Server before 6.11.0 and VNC Viewer before 6.22.826 on Windows allow local privilege escalation via MSI installer Repair mode.
- Product
- VNC Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordhelp.realvnc.comhelp.realvnc.com
Jun 10, 2022RealVNC VNC Server 6.9.0 through 5.1.0 for Windows allows local privilege escalation because an installer repair operation executes %TEMP% files as SYSTEM.CVE-2022-27502 · Other software · Realvnc · reported by MITREHigh 7.8
RealVNC VNC Server 6.9.0 through 5.1.0 for Windows allows local privilege escalation because an installer repair operation executes %TEMP% files as SYSTEM.
- Product
- VNC Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordhelp.realvnc.comrealvnc.com
Sep 17, 2021RealVNC Viewer 6.21.406 allows remote VNC servers to cause a denial of service (application crash) via crafted RFB protocol data.CVE-2021-41380 · Other software · Realvnc · reported by MITREMedium 6.5
RealVNC Viewer 6.21.406 allows remote VNC servers to cause a denial of service (application crash) via crafted RFB protocol data. NOTE: It is asserted that this issue requires social engineering a user into connecting to a fake VNC Server. The VNC Viewer application they are using will then hang, until terminated, but no memory leak occurs - the resources are freed once the hung process is terminated and the resource usage is constant during the hang. Only the process that is connected to the fake Server is affected. This is an application bug, not a security issue
- Product
- VNC Viewer
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgist.github.comgist.github.com
Apr 22, 2021Improper authentication vulnerability in GOT2000 series GT27 model VNC server versions 01.39.010 and prior, GOT2000 series GT25 model VNC server versions 01.39.CVE-2021-20590 · Other software · Mitsubishielectric · reported by Mitsubishielectric.Psirt@yd.MitsubishiElectric.co.jpHigh 7.5
Improper authentication vulnerability in GOT2000 series GT27 model VNC server versions 01.39.010 and prior, GOT2000 series GT25 model VNC server versions 01.39.010 and prior, GOT2000 series GT21 model GT2107-WTBD VNC server versions 01.40.000 and prior, GOT2000 series GT21 model GT2107-WTSD VNC server versions 01.40.000 and prior, GOT SIMPLE series GS21 model GS2110-WTBD-N VNC server versions 01.40.000 and prior and GOT SIMPLE series GS21 model GS2107-WTBD-N VNC server versions 01.40.000 and prior allows a remote unauthenticated attacker to gain unauthorized access via specially crafted packets when the "VNC server" function is used.
- Product
- Got2000 Gt27 Firmware
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordjvn.jpmitsubishielectric.com
Oct 29, 2019TurboVNC server code contains stack buffer overflow vulnerability in commit prior to cea98166008301e614e0d36776bf9435a536136e.CVE-2019-15683 · Other software · Kaspersky · reported by vulnerability@kaspersky.comCritical 9.8
TurboVNC server code contains stack buffer overflow vulnerability in commit prior to cea98166008301e614e0d36776bf9435a536136e. This could possibly result into remote code execution, since stack frame is not protected with stack canary. This attack appear to be exploitable via network connectivity. To exploit this vulnerability authorization on server is required. These issues have been fixed in commit cea98166008301e614e0d36776bf9435a536136e.
- Product
- TurboVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 29, 2019LibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server code, which allow an attacker to read stack memory CVE-2019-15681 · Other software · Kaspersky · reported by vulnerability@kaspersky.comHigh 7.5
LibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appear to be exploitable via network connectivity. These vulnerabilities have been fixed in commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a.
- Product
- LibVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.opensuse.orglists.opensuse.org
Oct 16, 2019ThinVNC 1.0b1 is vulnerable to arbitrary file read, which leads to a compromise of the VNC server.CVE-2019-17662 · Other software · Cybelsoft · reported by MITRECritical 9.8
ThinVNC 1.0b1 is vulnerable to arbitrary file read, which leads to a compromise of the VNC server. The vulnerability exists even when authentication is turned on during the deployment of the VNC server. The password for authentication is stored in cleartext in a file that can be read via a ../../ThinVnc.ini directory traversal attack vector.
- Product
- Thinvnc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpacketstormsecurity.comgithub.com
Sep 25, 2019An XSS vulnerability was discovered in noVNC before 0.6.2 in which the remote VNC server could inject arbitrary HTML into the noVNC web page via the messages prCVE-2017-18635 · Other software · Novnc · reported by MITREMedium 6.1
An XSS vulnerability was discovered in noVNC before 0.6.2 in which the remote VNC server could inject arbitrary HTML into the noVNC web page via the messages propagated to the status field, such as the VNC server name.
- Product
- Novnc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordaccess.redhat.combugs.launchpad.net
Mar 8, 2019UltraVNC revision 1211 contains multiple memory leaks (CWE-665) in VNC server code, which allows an attacker to read stack memory and can be abused for informatCVE-2019-8277 · Other software · Kaspersky Lab · reported by vulnerability@kaspersky.comHigh 7.5
UltraVNC revision 1211 contains multiple memory leaks (CWE-665) in VNC server code, which allows an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1212.
- Product
- UltraVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcert-portal.siemens.comcert-portal.siemens.com
Mar 8, 2019UltraVNC revision 1211 has a stack buffer overflow vulnerability in VNC server code inside file transfer request handler, which can result in Denial of Service CVE-2019-8276 · Other software · Kaspersky Lab · reported by vulnerability@kaspersky.comHigh 7.5
UltraVNC revision 1211 has a stack buffer overflow vulnerability in VNC server code inside file transfer request handler, which can result in Denial of Service (DoS). This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.
- Product
- UltraVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcert-portal.siemens.comics-cert.kaspersky.com
Mar 8, 2019UltraVNC revision 1211 has multiple improper null termination vulnerabilities in VNC server code, which result in out-of-bound data being accessed by remote useCVE-2019-8275 · Other software · Kaspersky Lab · reported by vulnerability@kaspersky.comCritical 9.8
UltraVNC revision 1211 has multiple improper null termination vulnerabilities in VNC server code, which result in out-of-bound data being accessed by remote users. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1212.
- Product
- UltraVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcert-portal.siemens.comcert-portal.siemens.com
Mar 8, 2019UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer offer handler, which can potentially in result code execCVE-2019-8274 · Other software · Kaspersky Lab · reported by vulnerability@kaspersky.comCritical 9.8
UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer offer handler, which can potentially in result code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.
- Product
- UltraVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcert-portal.siemens.comics-cert.kaspersky.com
Mar 8, 2019UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer request handler, which can potentially result in code exCVE-2019-8273 · Other software · Kaspersky Lab · reported by vulnerability@kaspersky.comCritical 9.8
UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer request handler, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.
- Product
- UltraVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcert-portal.siemens.comics-cert.kaspersky.com
Mar 8, 2019UltraVNC revision 1211 has multiple off-by-one vulnerabilities in VNC server code, which can potentially result in code execution.CVE-2019-8272 · Other software · Kaspersky Lab · reported by vulnerability@kaspersky.comCritical 9.8
UltraVNC revision 1211 has multiple off-by-one vulnerabilities in VNC server code, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1212.
- Product
- UltraVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcert-portal.siemens.comics-cert.kaspersky.com
Mar 8, 2019UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer handler, which can potentially result code execution.CVE-2019-8271 · Other software · Kaspersky Lab · reported by vulnerability@kaspersky.comCritical 9.8
UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer handler, which can potentially result code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.
- Product
- UltraVNC
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordcert-portal.siemens.comics-cert.kaspersky.com
Jan 9, 2018VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle tCVE-2017-15124 · Other software · QEMU · reported by Red HatHigh 7.5
VNC server implementation in Quick Emulator (QEMU) 2.11.0 and older was found to be vulnerable to an unbounded memory allocation issue, as it did not throttle the framebuffer updates sent to its client. If the client did not consume these updates, VNC server allocates growing memory to hold onto this data. A malicious remote VNC client could use this flaw to cause DoS to the server host.
- Product
- Qemu
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comaccess.redhat.com
Feb 28, 2017The Xvnc server in TigerVNC allows remote attackers to cause a denial of service (invalid memory access and crash) by terminating a TLS handshake early.CVE-2016-10207 · Other software · Opensuse · reported by MITREHigh 7.5
The Xvnc server in TigerVNC allows remote attackers to cause a denial of service (invalid memory access and crash) by terminating a TLS handshake early.
- Product
- Leap
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.opensuse.orgrhn.redhat.com
Dec 14, 2016XRegion in TigerVNC allows remote VNC servers to cause a denial of service (NULL pointer dereference) by leveraging failure to check a malloc return value, a siCVE-2014-8241 · Other software · Tigervnc · reported by MITRECritical 9.8
XRegion in TigerVNC allows remote VNC servers to cause a denial of service (NULL pointer dereference) by leveraging failure to check a malloc return value, a similar issue to CVE-2014-6052.
- Product
- Tigervnc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordseclists.orgseclists.org
Jul 13, 2016libvirt before 2.0.0 improperly disables password checking when the password on a VNC server is set to an empty string, which allows remote attackers to bypass CVE-2016-5008 · Other software · Redhat · reported by Red HatCritical 9.8
libvirt before 2.0.0 improperly disables password checking when the password on a VNC server is set to an empty string, which allows remote attackers to bypass authentication and establish a VNC session by connecting to the server.
- Product
- Libvirt
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.opensuse.orglists.opensuse.org
Jun 9, 2015Comodo GeekBuddy before 4.18.121 does not restrict access to the VNC server, which allows local users to gain privileges by connecting to the server.CVE-2014-7872 · Other software · Comodo · reported by MITREHigh 7.2
Comodo GeekBuddy before 4.18.121 does not restrict access to the VNC server, which allows local users to gain privileges by connecting to the server.
- Product
- Geekbuddy
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordpacketstormsecurity.comosvdb.org
Oct 16, 2014Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen siCVE-2014-8240 · Other software · Tigervnc · reported by MITREHigh 7.5
Integer overflow in TigerVNC allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via vectors related to screen size handling, which triggers a heap-based buffer overflow, a similar issue to CVE-2014-6051.
- Product
- Tigervnc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordseclists.orgseclists.org
Sep 30, 2014Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crasCVE-2014-6051 · Other software · Redhat · reported by MITREHigh 7.5
Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via an advertisement for a large screen size, which triggers a heap-based buffer overflow.
- Product
- Enterprise Linux Server AUS
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.fedoraproject.orglists.fedoraproject.org
Aug 22, 2012Apple Remote Desktop before 3.6.1 does not recognize the "Encrypt all network data" setting during connections to third-party VNC servers, which allows remote aCVE-2012-0681 · Computers, phones & browsers · Apple · reported by product-security@apple.comMedium 4.3
Apple Remote Desktop before 3.6.1 does not recognize the "Encrypt all network data" setting during connections to third-party VNC servers, which allows remote attackers to obtain cleartext VNC session content by sniffing the network.
- Product
- Apple Remote Desktop
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.apple.comsupport.apple.com
Nov 10, 2009Screen Sharing in Apple Mac OS X 10.5.8 allows remote VNC servers to execute arbitrary code or cause a denial of service (memory corruption and application crasCVE-2009-2839 · Computers, phones & browsers · Apple · reported by MITREMedium 6.8
Screen Sharing in Apple Mac OS X 10.5.8 allows remote VNC servers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via unspecified vectors.
- Product
- MAC OS X
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.apple.comosvdb.org
Oct 23, 2009Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on the host OCVE-2009-3616 · Other software · Qemu · reported by Red HatCritical 9.9
Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS users to execute arbitrary code on the host OS by establishing a connection from a VNC client and then (1) disconnecting during data transfer, (2) sending a message using incorrect integer data types, or (3) using the Fuzzy Screen Mode protocol, related to double free vulnerabilities.
- Product
- Qemu
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordgit.savannah.gnu.orggit.savannah.gnu.org
Feb 4, 2009Multiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remote VNC servers to cause a denial of service (heap corruptionCVE-2009-0388 · Other software · Tightvnc · reported by MITREHigh 10
Multiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remote VNC servers to cause a denial of service (heap corruption and application crash) or possibly execute arbitrary code via a large length value in a message, related to the (a) ClientConnection::CheckBufferSize and (b) ClientConnection::CheckFileZipBufferSize functions in ClientConnection.cpp.
- Product
- Tightvnc
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordforum.ultravnc.infosecunia.com
Dec 24, 2008The protocol_client_msg function in vnc.c in the VNC server in (1) Qemu 0.9.1 and earlier and (2) KVM kvm-79 and earlier allows remote attackers to cause a deniCVE-2008-2382 · Other software · Qemu · reported by MITREMedium 5
The protocol_client_msg function in vnc.c in the VNC server in (1) Qemu 0.9.1 and earlier and (2) KVM kvm-79 and earlier allows remote attackers to cause a denial of service (infinite loop) via a certain message.
- Product
- Qemu
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.opensuse.orglists.opensuse.org
Aug 6, 2008vncviewer.exe in RealVNC Windows Client 4.1.2.0 allows remote VNC servers to cause a denial of service (application crash) via a crafted frame buffer update pacCVE-2008-3493 · Other software · Realvnc · reported by MITREMedium 5
vncviewer.exe in RealVNC Windows Client 4.1.2.0 allows remote VNC servers to cause a denial of service (application crash) via a crafted frame buffer update packet.
- Product
- Realvnc Windows Client
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comexchange.xforce.ibmcloud.com
Mar 20, 2007The VNC server implementation in QEMU, as used by Xen and possibly other environments, allows local users of a guest operating system to read arbitrary files onCVE-2007-0998 · Other software · XEN · reported by Red HatMedium 4.3
The VNC server implementation in QEMU, as used by Xen and possibly other environments, allows local users of a guest operating system to read arbitrary files on the host operating system via unspecified vectors related to QEMU monitor mode, as demonstrated by mapping files to a CDROM device. NOTE: some of these details are obtained from third party information.
- Product
- Qemu
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordfedoranews.orgfedoranews.org
Aug 23, 2006VNC server on the AK-Systems Windows Terminal 1.2.5 ExVLP is not password protected, which allows remote attackers to login and view RDP or Citrix sessions.CVE-2006-4309 · Other software · Ak-systems · reported by MITREHigh 10
VNC server on the AK-Systems Windows Terminal 1.2.5 ExVLP is not password protected, which allows remote attackers to login and view RDP or Citrix sessions.
- Product
- Windows Terminal
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityreason.comsecurityfocus.com
Sep 24, 2002Vulnerability in VNC, TightVNC, and TridiaVNC allows local users to execute arbitrary code as LocalSystem by using the Win32 Messaging System to bypass the VNC CVE-2002-0971 · Other software · ATT · reported by MITREMedium 4.6
Vulnerability in VNC, TightVNC, and TridiaVNC allows local users to execute arbitrary code as LocalSystem by using the Win32 Messaging System to bypass the VNC GUI and access the "Add new clients" dialogue box.
- Product
- Winvnc Server
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
Weekly security brief
The flaws that hit local websites, every Friday.
One short email: what got exploited this week, which WordPress plugins broke, and what to check. Unsubscribe in one click.
Tell us what you're building.
A website, your marketing, a security check, an app, or the thing you've been running out of a spreadsheet for three years. A few lines is plenty.
Not ready to talk yet? Run the free website check and see what Google sees.