Python Cryptographic Authority: Fail-Open in set_tlsext_servername_callback on pyopenssl via unhandled exceptions leads to security bypass

A vulnerability was discovered in the pyopenssl library's handling of the Server Name Indication SNI callback settlsextservernamecallback. The internal wrapper for this callback catches all Python exceptions raised by user code but returns 0 Success/SSLTLSEXTERROK to the underlying OpenSSL engine...

Security Bulletin: OpenSSL stack buffer overflow vulnerability affect IBM Cloud Pak System [CVE-2025-15467]

Summary Stack buffer overflow vulnerability in OpenSSL shipped with OS Image for Red Hat Enterprise Linux System affect IBM Cloud Pak System. Stack buffer overflow that can be exploited by a remote attacker to cause a Denial of Service DoS or potentially allow for remote code execution...

Siemens SIMATIC S7-1500 Out-of-bounds Write (CVE-2025-69419)

Issue summary: Calling PKCS12getfriendlyname function on a maliciously crafted PKCS12 file with a BMPString UTF-16BE friendly name containing non-ASCII BMP code point can trigger a one byte write before the allocated buffer. Impact summary: The out-of-bounds write can cause a memory corruption...

📄 OpenSSL 3.x PKCS#12 PBMAC1 KeyLength Buffer Overflow

This proof of concept demonstrates a buffer overflow vulnerability in OpenSSL versions 3.4 to 3.6 related to improper handling of the PBMAC1 keyLength parameter in PKCS12 files. By crafting a malicious PKCS12 structure with an excessively large keyLength value, the proof of concept triggers a...

Siemens SIMATIC S7-1500 Improper Check for Unusual or Exceptional Conditions (CVE-2025-69420)

Issue summary: A type confusion vulnerability exists in the TimeStamp Response verification code where an ASN1TYPE union member is accessed without first validating the type, causing an invalid or NULL pointer dereference when processing a malformed TimeStamp Response file. Impact summary: An...

Important: Red Hat Security Advisory: OpenShift Container Platform 4.18.33 bug fix and security update

Red Hat OpenShift Container Platform release 4.18.33 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.18. Red Hat Product Security has rated this update as having a...

Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: openssl (UTSA-2026-005327)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005327 advisory. Issue summary: An application trying to decrypt CMS messages encrypted using password based encryption can trigger an out-of-bounds read and write. Impact summary:...

Siemens SCALANCE and RUGGEDCOM Covert Timing Channel (CVE-2025-27587)

OpenSSL 3.0.0 through 3.3.2 on the PowerPC architecture is vulnerable to a Minerva attack, exploitable by measuring the time of signing of random messages using the EVPDigestSign API, and then using the private key to extract the K value nonce from the signatures. Next, based on the bit size of t...

K000159887: OpenSSL vulnerability CVE-2025-9230

Security Advisory Description Issue summary: An application trying to decrypt CMS messages encrypted using password based encryption can trigger an out-of-bounds read and write. Impact summary: This out-of-bounds read may trigger a crash which leads to Denial of Service for an application. The...

K000159898: OpenSSL vulnerability CVE-2025-11187

Security Advisory Description Issue summary: PBMAC1 parameters in PKCS12 files are missing validation which can trigger a stack-based buffer overflow, invalid pointer or NULL pointer dereference during MAC verification. Impact summary: The stack buffer overflow or NULL pointer dereference may cau...

Medium: aws-nitro-enclaves-cli

Issue Overview: openssl: rust-openssl Use-After-Free in Md::fetch and Cipher::fetch CVE-2025-3416 Affected Packages: aws-nitro-enclaves-cli Note: This advisory is applicable to Amazon Linux 2 - Nitro-enclaves Extra. Visit this page to learn more about Amazon Linux 2 AL2 Extras and this FAQ sectio...

Amazon Linux 2 : aws-nitro-enclaves-cli, --advisory ALAS2NITRO-ENCLAVES-2026-086 (ALASNITRO-ENCLAVES-2026-086)

The version of aws-nitro-enclaves-cli installed on the remote host is prior to 1.4.4-0. It is, therefore, affected by a vulnerability as referenced in the ALAS2NITRO-ENCLAVES-2026-086 advisory. openssl: rust-openssl Use-After-Free in Md::fetch and Cipher::fetch CVE-2025-3416 Tenable has extracted...

Medium: aws-nitro-enclaves-cli

Issue Overview: openssl: rust-openssl Use-After-Free in Md::fetch and Cipher::fetch CVE-2025-3416 Affected Packages: aws-nitro-enclaves-cli Issue Correction: Run dnf update aws-nitro-enclaves-cli --releasever 2023.10.20260202 or dnf update --advisory ALAS2023-2026-1371 --releasever 2023.10.202602...

The vulnerability of the TS_RESP_verify_response() function in the OpenSSL library allows a hacker to induce a service failure.

The vulnerability of the TSRESPverifyresponse function in the OpenSSL library is related to insufficient checking of unusual or exceptional states. Exploiting this vulnerability could allow a malicious actor to cause service failures...

K000159868: OpenSSL vulnerability CVE-2025-15467

Security Advisory Description Issue summary: Parsing CMS AuthEnvelopedData message with maliciously crafted AEAD parameters can trigger a stack buffer overflow. Impact summary: A stack buffer overflow may lead to a crash, causing Denial of Service, or potentially remote code execution. When parsi...

openssl: OpenSSL: Remote code execution or Denial of Service via oversized Initialization Vector in CMS parsing

A flaw was found in OpenSSL. A remote attacker can exploit a stack buffer overflow vulnerability by supplying a crafted Cryptographic Message Syntax CMS message with an oversized Initialization Vector IV when parsing AuthEnvelopedData structures that use Authenticated Encryption with Associated...

CVE-2025-66199 affecting package openssl for versions less than 3.3.5-2

CVE-2025-66199 affecting package openssl for versions less than 3.3.5-2. A patched version of the package is available...

CVE-2025-15467 affecting package openssl for versions less than 3.3.5-2

CVE-2025-15467 affecting package openssl for versions less than 3.3.5-2. A patched version of the package is available...

RHEL 7 : openssl (RHSA-2026:1720)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:1720 advisory. OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transport Layer Security TLS protocols, as well as a full-strength...

Huawei EulerOS: Security Advisory for openssl (EulerOS-SA-2026-1136)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2026 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...