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.
16 results
Oct 22, 2026A flaw was found in the iscsiuio component of open-iscsi.CVE-2026-115486 · Other software · Red Hat · reported by Red HatHigh 7.1
A flaw was found in the iscsiuio component of open-iscsi. The IPv6 Neighbor Discovery handler accesses link-layer address options at a fixed offset without verifying the packet contains them. Additionally, the ARP table is updated unconditionally with attacker-controlled addresses from the packet headers. An attacker on the same network segment can send a minimal Neighbor Advertisement to poison the ARP table and redirect network traffic.
- Product
- Red Hat Enterprise Linux 10
- 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 22, 2026A flaw was found in the iscsiuio component of open-iscsi.CVE-2026-115485 · Other software · Red Hat · reported by Red HatMedium 6.3
A flaw was found in the iscsiuio component of open-iscsi. The DHCPv6 option parser calls strlen() on raw network data without ensuring a NUL terminator is present, causing it to read past the buffer into heap memory. This can result in a daemon crash, a 1-byte heap overwrite, or corruption of the iSCSI initiator name. An attacker on the same network segment can trigger this by sending a crafted DHCPv6 Advertise message.
- Product
- Red Hat Enterprise Linux 10
- 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 22, 2026A flaw was found in the iscsiuio component of open-iscsi.CVE-2026-115484 · Other software · Red Hat · reported by Red HatHigh 7.6
A flaw was found in the iscsiuio component of open-iscsi. The DHCPv4 option parser incorrectly calculates the length of the options data, causing it to read beyond the allocated buffer into adjacent heap memory. An attacker on the same network segment can send a crafted DHCP response to crash the daemon or corrupt its network configuration.
- Product
- Red Hat Enterprise Linux 10
- 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
Aug 13, 2026A flaw was found in open-iscsi.CVE-2026-18728 · Other software · Red Hat · reported by Red HatMedium 6.5
A flaw was found in open-iscsi. An integer underflow vulnerability in the `iscsiuio` component, specifically during IPv4 Dynamic Host Configuration Protocol (DHCP) parsing, allows a remote attacker on the same local network segment to cause a denial of service. By sending a specially crafted IPv4/UDP DHCP reply, the attacker can trigger an out-of-bounds read, leading to the `iscsiuio` process crashing. This issue affects systems where `iscsiuio` is actively handling IPv4 DHCP traffic.
- Product
- Red Hat Enterprise Linux 10
- 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
Aug 12, 2026A flaw was found in open-iscsi's iscsiuio component.CVE-2026-18727 · Other software · Red Hat · reported by Red HatMedium 6.5
A flaw was found in open-iscsi's iscsiuio component. This vulnerability involves an integer underflow and out-of-bounds read during Dynamic Host Configuration Protocol for IPv6 (DHCPv6) packet parsing. Specifically, crafted DHCPv6 Advertise traffic with a short User Datagram Protocol (UDP) length can cause the DHCPv6 payload length to underflow. An unauthenticated attacker on an adjacent network segment can exploit this by sending specially crafted IPv6 UDP traffic while the client is in an active DHCPv6 exchange, leading to a denial of service due to a process crash or service disruption.
- Product
- Red Hat Enterprise Linux 10
- 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
Aug 12, 2026A flaw was found in open-iscsi.CVE-2026-18726 · Other software · Red Hat · reported by Red HatMedium 6.5
A flaw was found in open-iscsi. This vulnerability allows a remote attacker on the same local network segment to cause a Denial of Service (DoS) in the iscsiuio daemon. By sending a specially crafted Internet Control Message Protocol version 6 (ICMPv6) Router Advertisement with a zero-length option, the attacker can trigger an infinite loop. This leads to sustained CPU usage, rendering the daemon unresponsive and impacting system availability. A secondary risk of out-of-bounds reads exists with a short IPv6 payload, though no memory corruption or data exposure has been confirmed.
- Product
- Red Hat Enterprise Linux 10
- 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 29, 2026A Double Free vulnerability in open-iscsi allows an unauthenticated MITM attacker to cause DoS.CVE-2026-55995 · Other software · open-iscsi · reported by meissner@suse.deHigh 8.7
A Double Free vulnerability in open-iscsi allows an unauthenticated MITM attacker to cause DoS. This issue affects open-iscsi: from ? through 56718d4e9d1a4f51c30697b5c0534144bb41c9bb.
- Product
- open-iscsi
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.suse.comgithub.com
Jul 29, 2026An Incorrect Authorization vulnerability in open-iscsi allows unprivilidged local users to use the isscsiuio control socket.CVE-2026-44944 · Other software · open-iscsi · reported by meissner@suse.deHigh 8.5
An Incorrect Authorization vulnerability in open-iscsi allows unprivilidged local users to use the isscsiuio control socket. This issue affects open-iscsi: from ? through 668ca1df9c9a1e9bdd5c999ae1d67c9c8909237e.
- Product
- open-iscsi
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.suse.comgithub.com
Jul 29, 2026An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in open-iscsi allows remote MITM attackers to create root-ownedCVE-2026-44943 · Other software · open-iscsi · reported by meissner@suse.deMedium 6.9
An Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in open-iscsi allows remote MITM attackers to create root-owned files outside the database and inject lines into the record. This issue affects open-iscsi: from through 668ca1df9c9a1e9bdd5c999ae1d67c9c8909237e.
- Product
- open-iscsi
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.suse.comgithub.com
Jan 13, 2021In Open-iSCSI tcmu-runner 1.3.x, 1.4.x, and 1.5.x through 1.5.2, xcopy_locate_udev in tcmur_cmd_handler.c lacks a check for transport-layer restrictions, allowiCVE-2021-3139 · Other software · Tcmu-runner Project · reported by MITREHigh 8.1
In Open-iSCSI tcmu-runner 1.3.x, 1.4.x, and 1.5.x through 1.5.2, xcopy_locate_udev in tcmur_cmd_handler.c lacks a check for transport-layer restrictions, allowing remote attackers to read or write files via directory traversal in an XCOPY request. For example, an attack can occur over a network if the attacker has access to one iSCSI LUN. NOTE: relative to CVE-2020-28374, this is a similar mistake in a different algorithm.
- Product
- Tcmu-runner
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.combugzilla.suse.com
Jun 19, 2020Open-iSCSI rtslib-fb through 2.1.72 has weak permissions for /etc/target/saveconfig.json because shutil.copyfile (instead of shutil.copy) is used, and thus permCVE-2020-14019 · Other software · Rtslib-fb Project · reported by MITREHigh 7.8
Open-iSCSI rtslib-fb through 2.1.72 has weak permissions for /etc/target/saveconfig.json because shutil.copyfile (instead of shutil.copy) is used, and thus permissions are not preserved.
- Product
- Rtslib-fb
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.opensuse.orggithub.com
Jun 5, 2020Open-iSCSI targetcli-fb through 2.1.52 has weak permissions for /etc/target (and for the backup directory and backup files).CVE-2020-13867 · Other software · Targetcli-fb Project · reported by MITREMedium 5.5
Open-iSCSI targetcli-fb through 2.1.52 has weak permissions for /etc/target (and for the backup directory and backup files).
- Product
- Targetcli-fb
- 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
Dec 27, 2017An issue was discovered in Open-iSCSI through 2.0.875.CVE-2017-17840 · Other software · Open-iscsi Project · reported by MITREHigh 7.8
An issue was discovered in Open-iSCSI through 2.0.875. A local attacker can cause the iscsiuio server to abort or potentially execute code by sending messages with incorrect lengths, which (due to lack of checking) can lead to buffer overflows, and result in aborts (with overflow checking enabled) or code execution. The process_iscsid_broadcast function in iscsiuio/src/unix/iscsid_ipc.c does not validate the payload length before a write operation.
- Product
- Open-iscsi
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordopenwall.combugzilla.opensuse.org
Oct 23, 2009iscsi_discovery in open-iscsi in SUSE openSUSE 10.3 through 11.1 and SUSE Linux Enterprise (SLE) 10 SP2 and 11, and other operating systems, allows local users CVE-2009-1297 · Other software · Novell · reported by security@ubuntu.comMedium 4.4
iscsi_discovery in open-iscsi in SUSE openSUSE 10.3 through 11.1 and SUSE Linux Enterprise (SLE) 10 SP2 and 11, and other operating systems, allows local users to overwrite arbitrary files via a symlink attack on an unspecified temporary file that has a predictable name.
- Product
- Suse Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordlists.opensuse.orgmandriva.com
Jun 14, 2007usr/log.c in iscsid in open-iscsi (iscsi-initiator-utils) before 2.0-865 uses a semaphore with insecure permissions (world-writable/world-readable) for managingCVE-2007-3100 · Other software · Redhat · reported by Red HatLow 2.1
usr/log.c in iscsid in open-iscsi (iscsi-initiator-utils) before 2.0-865 uses a semaphore with insecure permissions (world-writable/world-readable) for managing log messages using shared memory, which allows local users to cause a denial of service (hang) by grabbing the semaphore.
- Product
- Open Iscsi
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.redhat.comosvdb.org
Jun 14, 2007usr/mgmt_ipc.c in iscsid in open-iscsi (iscsi-initiator-utils) before 2.0-865 checks the client's UID on the listening AF_LOCAL socket instead of the new connecCVE-2007-3099 · Other software · Redhat · reported by Red HatLow 2.1
usr/mgmt_ipc.c in iscsid in open-iscsi (iscsi-initiator-utils) before 2.0-865 checks the client's UID on the listening AF_LOCAL socket instead of the new connection, which allows remote attackers to access the management interface and cause a denial of service (iscsid exit or iSCSI connection loss).
- Product
- Enterprise Linux
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordbugzilla.redhat.comosvdb.org
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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