CVE-2026-45447

🚨 CVE-2026-45447 - Critical OpenSSL Use-After-Free Vulnerability Heap Use-After-Free in PKCS7verify allowing memory corruption, crashes, and potential remote code execution. 📖 Executive Summary CVE-2026-45447 is a critical vulnerability in OpenSSL's PKCS7 verification functionality. The flaw exis...

Important: Red Hat Security Advisory: openssl security update

An update for openssl is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available fo...

openssl: Heap Use-After-Free in OpenSSL PKCS7_verify()

A flaw was found in OpenSSL. When processing a specially crafted PKCS7 or S/MIME Secure/Multipurpose Internet Mail Extensions signed message, a heap use-after-free vulnerability in the PKCS7verify function can be triggered. This occurs if the SignedData digestAlgorithms field is present as an emp...

RHEL 7 : openssl (RHSA-2026:58563)

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:58563 advisory. OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transport Layer Security TLS protocols, as well as a full-strength...

ANT-2026-AYWQW7P2 · openssl · Use-After-Free

use-after-free critical CVE-2026-45447 GHSA-f684-cpcq-j565 Severity Claude high · Security research firm high · Maintainer critical REPORT Anthropic's analysis, sealed at approval. Disclosure to the maintainer was performed by Calif. ANT-2026-AYWQW7P2: PKCS7verify frees caller-owned indata BIO wh...

RockyLinux 9 : compat-openssl11 (RLSA-2026:44438)

The remote RockyLinux 9 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:44438 advisory. openssl: Heap Use-After-Free in OpenSSL PKCS7verify CVE-2026-45447 Tenable has extracted the preceding description block directly from the RockyLinux security...

AlmaLinux 9 : compat-openssl11 (ALSA-2026:44438)

The remote AlmaLinux 9 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2026:44438 advisory. openssl: Heap Use-After-Free in OpenSSL PKCS7verify CVE-2026-45447 Tenable has extracted the preceding description block directly from the AlmaLinux security...

compat-openssl11 security update

1:1.1.1k-5.4 - Fixes CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7verify...

RHEL 9 : compat-openssl11 (RHSA-2026:44438)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:44438 advisory. The OpenSSL toolkit provides support for secure communications between machines. This version of OpenSSL package contains only the libraries from th...

Oracle Linux 8 : compat-openssl10 (ELSA-2026-36215)

The remote Oracle Linux 8 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-36215 advisory. 1.1.0-2o-4.3 - Fix CVE-2026-45447: Fix double-free of caller-owned BIO in PKCS7verify Tenable has extracted the preceding description block directly from the...

SUSE-SU-2026:2621-1 Security update for openssl-1_1-livepatches

This update for openssl-11-livepatches fixes the following issues - CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7verify bsc1266357...

SUSE SLES15 Security Update : openssl-1_1-livepatches (SUSE-SU-2026:2412-1)

The remote SUSE Linux SLES15 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2026:2412-1 advisory. This update for openssl-11-livepatches fixes the following issues - CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7verify bsc1266357. Tenable has...

openssl security update

An update is available for openssl. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transpo...

RockyLinux 8 : openssl (RLSA-2026:26275)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:26275 advisory. openssl: Use After Free with SSLfreebuffers CVE-2024-4741 openssl: Heap Use-After-Free in OpenSSL PKCS7verify CVE-2026-45447 Tenable has extracted the...

Security update for openssl-1_1-livepatches

This update for openssl-11-livepatches fixes the following issues CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7verify bsc1266357. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST onlineupdate or "zypper patch". Alternatively you can ru...

SUSE-SU-2026:2410-1 Security update for openssl-1_1-livepatches

This update for openssl-11-livepatches fixes the following issues - CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7verify bsc1266357...

SUSE-SU-2026:2409-1 Security update for openssl-1_1-livepatches

This update for openssl-11-livepatches fixes the following issues - CVE-2026-45447: Heap Use-After-Free in OpenSSL PKCS7verify bsc1266357...

SUSE-SU-2026:2396-1 Security update for openssl-1_0_0

This update for openssl-100 fixes the following issues - CVE-2026-7383: Possible Heap Buffer Overflow in ASN.1 Multibyte String Conversion bsc1266340. - CVE-2026-9076: Out-of-Bounds Read in CMS Password-Based Decryption bsc1266341. - CVE-2026-28388: NULL Pointer Dereference When Processing a Delt...

AZL-89811 CVE-2026-45447 affecting package openssl-fips-provider 3.1.2-2

Issue summary: A specially crafted PKCS7 or S/MIME signed message could trigger a use-after-free during PKCS7 signature verification. Impact summary: A use-after-free may result in process crashes, heap corruption, or potentially remote code execution. When processing a PKCS7 or S/MIME signed...

CVE-2023-24011 Data Distribution Service (DDS) Chain of Trust (CoT) violation vulnerability in Cyclone DDS

An attacker can arbitrarily craft malicious DDS Participants or ROS 2 Nodes with valid certificates to compromise and get full control of the attacked secure DDS databus system by exploiting vulnerable attributes in the configuration of PKCS7 certificate’s validation. This is caused by a...