CVE-2026-86132: Integer Underflow (Wrap or Wraparound)

An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon iked allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite...

CVE-2026-86133: Improper Validation of Specified Quantity in Input

An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon iked allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service...

AlmaLinux 9.6 [TuxCare] Security Update: gstreamer1 / gstreamer1-devel (ALMALINUX9.6:CLSA-2026:1776433691)

The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1776433691 advisory. - GStreamer is a library for constructing graphs of media-handling components. An integer underflow has been detected in the function...

AlmaLinux 9.6 [TuxCare] Security Update: libsoup / libsoup-devel / libsoup-doc (ALMALINUX9.6:CLSA-2026:1777659767)

The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1777659767 advisory. - A flaw was found in libsoup. An integer underflow vulnerability occurs when processing content with a zero-length resource, leading to a...

AlmaLinux 9.2 [TuxCare] Security Update: xorg-x11-server-Xwayland / xorg-x11-server-Xwayland-devel Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1777886414)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1777886414 advisory. - A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling,...

Rocky Linux 9.6 [TuxCare] Security Update: libsoup / libsoup-devel / libsoup-doc (ALMALINUX9.6:CLSA-2026:1777659767)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1777659767 advisory. - A flaw was found in libsoup. An integer underflow vulnerability occurs when processing content with a zero-length resource, leading to a...

Rocky Linux 9.6 [TuxCare] Security Update: gstreamer1 / gstreamer1-devel (ALMALINUX9.6:CLSA-2026:1776433691)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1776433691 advisory. - GStreamer is a library for constructing graphs of media-handling components. An integer underflow has been detected in the function...

CentOS Linux 7 [TuxCare] Security Update: tigervnc / tigervnc-icons / tigervnc-license / tigervnc-server / etc Multiple Vulnerabilities (CENTOS7:CLSA-2026:1781081364)

The CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS7:CLSA-2026:1781081364 advisory. - A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allo...

AlmaLinux 9.6 [TuxCare] Security Update: cups / cups-client / cups-devel / cups-filesystem / cups-ipptool / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1776768072)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1776768072 advisory. - OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior,...

Rocky Linux 9.6 [TuxCare] Security Update: gnutls / gnutls-c++ / gnutls-dane / gnutls-devel / gnutls-utils (ALMALINUX9.6:CLSA-2026:1779203444)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1779203444 advisory. - A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow...

CVE-2026-86132

A pre-authentication integer underflow vulnerability exists in the WatchGuard Fireware OS IKEv2 daemon (iked ). This flaw allows a remote, unauthenticated attacker to cause a Denial of Service (DoS) by crashing the process. The attack is triggered by sending a specially crafted encrypted IKEv2 me...

CVE-2026-86133

An integer underflow vulnerability exists in the WatchGuard Fireware OS IKE daemon (iked ). A remote attacker who has completed the initial IKEv2 handshake can crash the iked process by sending a specially crafted encrypted IKEv2 message, leading to a denial of service . No specific exploit detai...

CVE-2026-86133 Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service

An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon iked allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service...

CVE-2026-86133 Fireware OS Pre-Authentication Integer Underflow in iked Allows Remote Denial of Service

An integer underflow vulnerability in the WatchGuard Fireware OS IKE daemon iked allows a remote attacker who has completed the initial IKEv2 handshake to crash the iked process by sending a specially crafted encrypted IKEv2 message, resulting in a denial of service...

CVE-2026-86132 Fireware OS Pre-Authentication Integer Underflow in iked Allows Denial of Service

An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon iked allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite...

CVE-2026-86132 Fireware OS Pre-Authentication Integer Underflow in iked Allows Denial of Service

An integer underflow vulnerability in the WatchGuard Fireware OS IKEv2 daemon iked allows a remote, unauthenticated attacker to crash the process by sending a specially crafted encrypted IKEv2 message negotiated with an AES-GCM cipher suite...

hdf5: HDF5: Denial of Service via integer underflow in Fletcher32 filter

A flaw was found in HDF5. An attacker can craft a malicious HDF5 file with a specially designed Fletcher32-filtered chunk. When this file is processed, an integer underflow occurs due to insufficient size validation, leading to a massive out-of-bounds read. This vulnerability can cause the...

CVE-2026-102714

nxicmpv6validateoptions scans the option area with while length 2 common/src/nxicmpv6validateoptions.c:79. An area whose size leaves a one- or two-byte residue exits the loop with that tail unexamined; the residue is not negative, so the function returns NXSUCCESS. Its zero-length rejection never...

Exploit for Integer Underflow (Wrap or Wraparound) in Microsoft

CVE-2024-38063: Exploitation, Detection & Mitigation Lab O...

CVE-2026-97413

A flaw was found in the Linux kernel's Remote Direct Memory Access RDMA subsystem. A malicious client can trigger an integer underflow by sending a specially crafted message with an oversized length field during read or write operations. This improper validation leads to an out-of-bounds memory...