Ubuntu 24.04 LTS / 25.04 / 25.10 : OpenVPN vulnerability (USN-7898-1)

The remote Ubuntu 24.04 LTS / 25.04 / 25.10 host has a package installed that is affected by a vulnerability as referenced in the USN-7898-1 advisory. Joshua Rogers discovered that OpenVPN incorrectly handled HMAC verification checks. A remote attacker could possibly use this issue to bypass sour...

Ubuntu: Security Advisory (USN-7898-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

OpenVPN HMAC Verification Vulnerability Bypass (Nov 2025) - Windows

OpenVPN is prone to a hmac bypass verification vulnerability. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:openvpn:openvpn";...

Slackware: Security Advisory (SSA:2025-323-01)

The remote host is missing an update for the SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Linux Distros Unpatched Vulnerability : CVE-2025-13086

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7alpha1 through 2.7rc1 allows an attacker to open a session from a...

FreeBSD : OpenVPN -- HMAC verification on source IP address ineffective (17a40d76-c3fd-11f0-b513-0da7be77c170)

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 17a40d76-c3fd-11f0-b513-0da7be77c170 advisory. Arne Schwabe reports: Fix memcmp check for the hmac verification in the 3way handshake being inverted...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989143)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989143 advisory. In the Linux kernel, the following vulnerability has been resolved: net: ipv6: unexport init-annotated seg6hmacinit EXPORTSYMBOL and init is a bad combination becaus...

Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989398)

"The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-989398 advisory. In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix out-of-bounds read when setting HMAC data. The SRv6 layer allows defining HMAC dat...

Unity Linux 20.1050e Security Update: kernel (UTSA-2025-990074)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990074 advisory. In the Linux kernel, the following vulnerability has been resolved: net: ipv6: unexport init-annotated seg6hmacinit EXPORTSYMBOL and init is a bad combination becaus...

Siemens SIMATIC Devices Missing Release of Memory after Effective Lifetime (CVE-2024-39489)

In the Linux kernel, the following vulnerability has been resolved: ipv6: sr: fix memleak in seg6hmacinitalgo seg6hmacinitalgo returns without cleaning up the previous allocations if one fails, so it's going to leak all that memory and the crypto tfms. Update seg6hmacexit to only free the memory...

Updated libtpms package fixes security vulnerability

It was discovered that libtpms had a potential out-of-bound access & abort due to HMAC signing issue CVE-2025-49133...

CVE-2025-34500

Deck Mate 2's firmware update mechanism accepts packages without cryptographic signature verification, encrypts them with a single hard-coded AES key shared across devices, and uses a truncated HMAC for integrity validation. Attackers with access to the update interface - typically via the unit's...

Siemens SIMATIC Devices NULL Pointer Dereference (CVE-2025-21640)

In the Linux kernel, the following vulnerability has been resolved: sctp: sysctl: cookiehmacalg: avoid using current-nsproxy As mentioned in a previous commit of this series, using the 'net' structure via 'current' is not recommended for different reasons: - Inconsistency: getting info from the...

OpenVPN -- HMAC verification on source IP address ineffective

Arne Schwabe reports: Fix memcmp check for the hmac verification in the 3way handshake being inverted This is a stupid mistake but causes all hmac cookies to be accepted, thus breaking source IP address validation. As a consequence, TLS sessions can be openend and state can be consumed in the...

EUVD-2025-35895

Deck Mate 2's firmware update mechanism accepts packages without cryptographic signature verification, encrypts them with a single hard-coded AES key shared across devices, and uses a truncated HMAC for integrity validation. Attackers with access to the update interface - typically via the unit's...

CVE-2025-34500 Shuffle Master Deck Mate 2 Insecure Update Chain

Deck Mate 2's firmware update mechanism accepts packages without cryptographic signature verification, encrypts them with a single hard-coded AES key shared across devices, and uses a truncated HMAC for integrity validation. Attackers with access to the update interface - typically via the unit's...

CVE-2025-34500

CVE-2025-34500 affects Deck Mate 2. The firmware update mechanism accepts unsigned packages, uses a single hard-coded AES key for encryption, and applies a truncated HMAC for integrity, enabling an attacker with USB/update-interface access to craft/modify firmware to execute arbitrary code as roo...

Huawei EulerOS: Security Advisory for krb5 (EulerOS-SA-2025-2265)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

PT-2025-43687

Name of the Vulnerable Software and Affected Versions Deck Mate 2 affected versions not specified Description The firmware update mechanism for Deck Mate 2 does not verify cryptographic signatures on update packages. Updates are encrypted using a single, hard-coded AES key shared across all devic...

Huawei EulerOS: Security Advisory for krb5 (EulerOS-SA-2025-2297)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...