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.
27 results
Apr 21, 2026Net::Dropbear versions before 0.14 for Perl contains a vulnerable version of libtomcrypt.CVE-2025-15638 · Other software · ATRODO · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eCritical 10
Net::Dropbear versions before 0.14 for Perl contains a vulnerable version of libtomcrypt. Net::Dropbear versions before 0.14 includes versions of Dropbear 2019.78 or earlier. These include versions of libtomcrypt v1.18.1 or earlier, which is affected by CVE-2016-6129 and CVE-2018-12437.
- Product
- Net::Dropbear
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 8, 2026A vulnerability was determined in mkj Dropbear up to 2025.89.CVE-2026-3706 · Other software · mkj · reported by VulDBLow 1.7
A vulnerability was determined in mkj Dropbear up to 2025.89. Impacted is the function unpackneg of the file src/curve25519.c of the component S Range Check. This manipulation causes improper verification of cryptographic signature. The attack can be initiated remotely. The attack is considered to have high complexity. The exploitability is considered difficult. The actual existence of this vulnerability is currently in question. Patch name: fdec3c90a15447bd538641d85e5a3e3ac981011d. To fix this issue, it is recommended to deploy a patch. The project maintainer explains: "Signature Malleability is not exploitable in SSH protocol. (...) [A] PoC doesn't exist for SSH implementation, but rather it's against the internal API."
- Product
- Dropbear
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 12, 2026A flaw was found in Dropbear.CVE-2025-14282 · Other software · https://github.com/mkj/dropbear/ · reported by patrick@puiterwijk.orgMedium 5.4
A flaw was found in Dropbear. When running in multi-user mode and authenticating users, the dropbear ssh server does the socket forwardings requested by the remote client as root, only switching to the logged-in user upon spawning a shell or performing some operations like reading the user's files. With the recent ability of also using unix domain sockets as the forwarding destination any user able to log in via ssh can connect to any unix socket with the root's credentials, bypassing both file system restrictions and any SO_PEERCRED / SO_PASSCRED checks performed by the peer.
- Product
- dropbear
- 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
Jul 16, 2025Net::Dropbear versions through 0.16 for Perl contains a dependency that may be susceptible to an integer overflow.CVE-2025-40913 · Other software · ATRODO · reported by 9b29abf9-4ab0-4765-b253-1875cd9b441eMedium 6.5
Net::Dropbear versions through 0.16 for Perl contains a dependency that may be susceptible to an integer overflow. Net::Dropbear embeds a version of the libtommath library that is susceptible to an integer overflow associated with CVE-2023-36328.
- Product
- Net::Dropbear
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 7, 2025dbclient in Dropbear SSH before 2025.88 allows command injection via an untrusted hostname argument, because a shell is used.CVE-2025-47203 · Other software · Dropbear SSH Project · reported by MITREMedium 4.5
dbclient in Dropbear SSH before 2025.88 allows command injection via an untrusted hostname argument, because a shell is used.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Mar 31, 2025VyOS 1.3 through 1.5 (fixed in 1.4.2) or any Debian-based system using dropbear in combination with live-build has the same Dropbear private host keys across diCVE-2025-30095 · Other software · VyOS · reported by MITRECritical 9
VyOS 1.3 through 1.5 (fixed in 1.4.2) or any Debian-based system using dropbear in combination with live-build has the same Dropbear private host keys across different installations. Thus, an attacker can conduct active man-in-the-middle attacks against SSH connections if Dropbear is enabled as the SSH daemon. I n VyOS, this is not the default configuration for the system SSH daemon, but is for the console service. To mitigate this, one can run "rm -f /etc/dropbear/*key*" and/or "rm -f /etc/dropbear-initramfs/*key*" and then dropbearkey -t rsa -s 4096 -f /etc/dropbear_rsa_host_key and reload the service or reboot the system before using Dropbear as the SSH daemon (this clears out all keys mistakenly built into the release image) or update to the latest version of VyOS 1.4 or 1.5. Note that this vulnerability is not unique to VyOS and may appear in any Debian-based Linux distribution that uses Dropbear in combination with live-build, which has a safeguard against this behavior in OpenSSH but no equivalent one for Dropbear.
- Product
- VyOS
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordblog.vyos.ioblog.vyos.io
Mar 31, 2023Akuvox E11 appears to be using a custom version of dropbear SSH server.CVE-2023-0344 · Other software · Akuvox · reported by ics-cert@hq.dhs.govCritical 9.1
Akuvox E11 appears to be using a custom version of dropbear SSH server. This server allows an insecure option that by default is not in the official dropbear SSH server.
- Product
- E11
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 12, 2022An issue was discovered in Dropbear through 2020.81.CVE-2021-36369 · Other software · Dropbear SSH Project · reported by MITREHigh 7.5
An issue was discovered in Dropbear through 2020.81. Due to a non-RFC-compliant check of the available authentication methods in the client-side SSH code, it is possible for an SSH server to change the login process in its favor. This attack can bypass additional security measures such as FIDO2 tokens or SSH-Askpass. Thus, it allows an attacker to abuse a forwarded agent for logging on to another server unnoticed.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Feb 25, 2021scp.c in Dropbear before 2020.79 mishandles the filename of .CVE-2020-36254 · Other software · Dropbear SSH Project · reported by MITREHigh 8.1
scp.c in Dropbear before 2020.79 mishandles the filename of . or an empty filename, a related issue to CVE-2018-20685.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Dec 30, 2020Dropbear 2011.54 through 2018.76 has an inconsistent failure delay that may lead to revealing valid usernames, a different issue than CVE-2018-15599.CVE-2019-12953 · Other software · Dropbear SSH Project · reported by MITREMedium 5.3
Dropbear 2011.54 through 2018.76 has an inconsistent failure delay that may lead to revealing valid usernames, a different issue than CVE-2018-15599.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmatt.ucc.asn.aumatt.ucc.asn.au
Mar 21, 2019It was found that dropbear before version 2013.59 with GSSAPI leaks whether given username is valid or invalid.CVE-2017-2659 · Other software · [UNKNOWN] · reported by Red HatMedium 5.3
It was found that dropbear before version 2013.59 with GSSAPI leaks whether given username is valid or invalid. When an invalid username is given, the GSSAPI authentication failure was incorrectly counted towards the maximum allowed number of password attempts.
- Product
- dropbear
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.redhat.comsecure.ucc.asn.au
Oct 8, 2018The Auto-Maskin DCU 210E firmware contains an undocumented Dropbear SSH server, v2015.55, configured to listen on Port 22 while the DCU is running.CVE-2018-5399 · Other software · Auto-Maskin · reported by cret@cert.orgCritical 9.4
The Auto-Maskin DCU 210E firmware contains an undocumented Dropbear SSH server, v2015.55, configured to listen on Port 22 while the DCU is running. The Dropbear server is configured with a hard-coded user name and password combination of root / amroot. The server is configured to use password only authentication not cryptographic keys, however the firmware image contains an RSA host-key for the server. An attacker can exploit this vulnerability to gain root access to the Angstrom Linux operating system and modify any binaries or configuration files in the firmware. Affected releases are Auto-Maskin DCU-210E RP-210E: Versions prior to 3.7 on ARMv7.
- Product
- DCU-210E
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordkb.cert.orgus-cert.gov
Aug 20, 2018The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76 is prone to a user enumeration vulnerability because username validity affects CVE-2018-15599 · Other software · Debian · reported by MITREMedium 5.3
The recv_msg_userauth_request function in svr-auth.c in Dropbear through 2018.76 is prone to a user enumeration vulnerability because username validity affects how fields in SSH_MSG_USERAUTH messages are handled, a similar issue to CVE-2018-15473 in an unrelated codebase.
- Product
- Debian Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.ucc.gu.uwa.edu.aulists.ucc.gu.uwa.edu.au
May 19, 2017Dropbear before 2017.75 might allow local users to read certain files as root, if the file has the authorized_keys file format with a command= option.CVE-2017-9079 · Other software · Dropbear SSH Project · reported by MITREMedium 4.7
Dropbear before 2017.75 might allow local users to read certain files as root, if the file has the authorized_keys file format with a command= option. This occurs because ~/.ssh/authorized_keys is read with root privileges and symlinks are followed.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.ucc.gu.uwa.edu.audebian.org
May 19, 2017The server in Dropbear before 2017.75 might allow post-authentication root remote code execution because of a double free in cleanup of TCP listeners when the -CVE-2017-9078 · Other software · Dropbear SSH Project · reported by MITREHigh 8.8
The server in Dropbear before 2017.75 might allow post-authentication root remote code execution because of a double free in cleanup of TCP listeners when the -a option is enabled.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.ucc.gu.uwa.edu.audebian.org
Mar 3, 2017The dbclient and server in Dropbear SSH before 2016.74, when compiled with DEBUG_TRACE, allows local users to read process memory via the -v argument, related tCVE-2016-7409 · Other software · Dropbear SSH Project · reported by MITREMedium 5.5
The dbclient and server in Dropbear SSH before 2016.74, when compiled with DEBUG_TRACE, allows local users to read process memory via the -v argument, related to a failed remote ident.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comsecurityfocus.com
Mar 3, 2017The dbclient in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via a crafted (1) -m or (2) -c argument.CVE-2016-7408 · Other software · Dropbear SSH Project · reported by MITREHigh 8.8
The dbclient in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via a crafted (1) -m or (2) -c argument.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comsecurityfocus.com
Mar 3, 2017The dropbearconvert command in Dropbear SSH before 2016.74 allows attackers to execute arbitrary code via a crafted OpenSSH key file.CVE-2016-7407 · Other software · Dropbear SSH Project · reported by MITRECritical 9.8
The dropbearconvert command in Dropbear SSH before 2016.74 allows attackers to execute arbitrary code via a crafted OpenSSH key file.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comsecurityfocus.com
Mar 3, 2017Format string vulnerability in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via format string specifiers in the (1) username orCVE-2016-7406 · Other software · Dropbear SSH Project · reported by MITRECritical 9.8
Format string vulnerability in Dropbear SSH before 2016.74 allows remote attackers to execute arbitrary code via format string specifiers in the (1) username or (2) host argument.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.comsecurityfocus.com
Mar 22, 2016CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwCVE-2016-3116 · Other software · Dropbear SSH Project · reported by MITREMedium 6.4
CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.
- Product
- Dropbear SSH
- 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
Oct 25, 2013Dropbear SSH Server before 2013.59 generates error messages for a failed logon attempt with different time delays depending on whether the user account exists, CVE-2013-4434 · Other software · Dropbear SSH Project · reported by Red HatMedium 5
Dropbear SSH Server before 2013.59 generates error messages for a failed logon attempt with different time delays depending on whether the user account exists, which allows remote attackers to discover valid usernames.
- Product
- Dropbear SSH
- 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 25, 2013The buf_decompress function in packet.c in Dropbear SSH Server before 2013.59 allows remote attackers to cause a denial of service (memory consumption) via a coCVE-2013-4421 · Other software · Dropbear SSH Project · reported by Red HatMedium 5
The buf_decompress function in packet.c in Dropbear SSH Server before 2013.59 allows remote attackers to cause a denial of service (memory consumption) via a compressed packet that has a large size when it is decompressed.
- Product
- Dropbear SSH
- 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
Jun 5, 2012Use-after-free vulnerability in Dropbear SSH Server 0.52 through 2012.54, when command restriction and public key authentication are enabled, allows remote authCVE-2012-0920 · Other software · Dropbear SSH Project · reported by MITREHigh 7.1
Use-after-free vulnerability in Dropbear SSH Server 0.52 through 2012.54, when command restriction and public key authentication are enabled, allows remote authenticated users to execute arbitrary code and bypass command restrictions via multiple crafted command requests, related to "channels concurrency."
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmatt.ucc.asn.ausecunia.com
Feb 26, 2007dbclient in Dropbear SSH client before 0.49 does not sufficiently warn the user when it detects a hostkey mismatch, which might allow remote attackers to conducCVE-2007-1099 · Other software · Dropbear SSH Project · reported by MITREHigh 7.5
dbclient in Dropbear SSH client before 0.49 does not sufficiently warn the user when it detects a hostkey mismatch, which might allow remote attackers to conduct man-in-the-middle attacks.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmatt.ucc.asn.auosvdb.org
Mar 13, 2006Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to causeCVE-2006-1206 · Other software · Dropbear SSH Project · reported by MITREMedium 5
Matt Johnston Dropbear SSH server 0.47 and earlier, as used in embedded Linux devices and on general-purpose operating systems, allows remote attackers to cause a denial of service (connection slot exhaustion) via a large number of connection attempts that exceeds the MAX_UNAUTH_CLIENTS defined value of 30.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecuritytracker.comsecurityfocus.com
Dec 12, 2005Buffer overflow in Dropbear server before 0.47 allows authenticated users to execute arbitrary code via unspecified inputs that cause insufficient memory to be CVE-2005-4178 · Other software · Dropbear SSH Project · reported by security@debian.orgMedium 6.5
Buffer overflow in Dropbear server before 0.47 allows authenticated users to execute arbitrary code via unspecified inputs that cause insufficient memory to be allocated due to an incorrect expression that does not enforce the proper order of operations.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.ucc.gu.uwa.edu.aumatt.ucc.asn.au
Dec 31, 2004The DSS verification code in Dropbear SSH Server before 0.43 frees uninitialized variables, which might allow remote attackers to gain access.CVE-2004-2486 · Other software · Dropbear SSH Project · reported by MITREHigh 7.5
The DSS verification code in Dropbear SSH Server before 0.43 frees uninitialized variables, which might allow remote attackers to gain access.
- Product
- Dropbear SSH
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordmatt.ucc.asn.ausecunia.com
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.
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