openssl: openssl: Denial of Service via inefficient QUIC stream reassembly

A flaw was found in OpenSSL. A remote attacker who establishes a QUIC network connection can cause a Denial of Service DoS by sending specially sequenced, out-of-order stream frames. Because the stream reassembly mechanism handles non-sequential data fragments inefficiently, processing these fram...

openssl: openssl: Denial of Service via out-of-bounds write during TLS context switch

A flaw was found in openssl. When a server replaces its security context during an active Transport Layer Security TLS handshake, it fails to update the internal capacity tracking for cryptographic signature algorithms. A remote peer can exploit this issue by advertising specific signature...

openssl: OpenSSL: Denial of Service via unenforced QUIC connection flow control

A flaw was found in OpenSSL. A remote attacker can cause a Denial of Service DoS due to missing connection-level flow control enforcement in the QUIC protocol implementation. By opening multiple streams that respect individual stream limits while preventing data consumption, the attacker can forc...

openssl: compat-openssl: openssl: Information disclosure via DTLS handshake retransmission

A flaw was found in OpenSSL. The Datagram Transport Layer Security DTLS retransmission mechanism fails to properly handle handshake message writes that are suspended before completion. A remote attacker could exploit this vulnerability during handshake message retransmission, causing OpenSSL to...

openssl: OpenSSL: Private key recovery via SM2 timing side-channel

A flaw was found in OpenSSL. During SM2 signature generation, variable-time arithmetic operations are performed on secret values, creating an observable timing side-channel. An attacker capable of measuring signature generation times can collect timing data across multiple signing operations, whi...

openssl: openssl: Traffic amplification Denial of Service via QUIC packet over-accounting

A flaw was found in OpenSSL. This vulnerability allows a remote attacker to abuse the server to amplify network traffic in a Denial of Service DoS attack. When the server is configured without client address validation, incoming datagrams containing multiple QUIC packets cause the server to...

openssl: openssl: Denial of Service via crafted CMP certificate revocation response

A flaw was found in OpenSSL. When a Certificate Management Protocol CMP client requests certificate revocation using a PKCS10 Certificate Signing Request CSR, it omits the certificate issuer name and serial number. A malicious or compromised CMP server, or an attacker possessing valid message...

Important: Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

An update for Red Hat Hardened Images RPMs is now available. This update includes the following RPMs: openssl: openssl-3.5.9-0.1.hum1 aarch64, x8664 openssl-config-fips-3.5.9-0.1.hum1 aarch64, x8664 openssl-devel-3.5.9-0.1.hum1 aarch64, x8664 openssl-devel-engine-3.5.9-0.1.hum1 aarch64, x8664...

Security Bulletin: Vulnerabilities exists in IBM Netezza Software

Summary Vulnerabilities identified in IBM Netezza Software have been addressed in version 11.3.1.4. Vulnerability Details CVEID:CVE-2026-42766 DESCRIPTION: Issue summary: A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption. Impact summar...

OpenSSL Fixes High-Severity DTLS Flaw That Can Leak Heap Memory Unencrypted

A High-severity OpenSSL flaw can leak heap memory to the other side of a DTLS connection or crash the program, OpenSSL said on September 29 as it released fixes. DTLS, the TLS variant used for UDP traffic, resends a handshake message if no reply arrives before the timer expires. The leak or crash...

Multiple vulnerabilities impact AIX due to OpenSSL

IBM SECURITY ADVISORY First Issued: Wed Sep 30 06:56:20 CDT 2026 Updated: Fri Oct 9 03:18:49 CDT 2026 Update: Updated the iFix to include the previously missing OpenSSL 1.1 and 1.0.2 shared libraries. The most recent version of this document is available here:...

[SECURITY] [DSA 6531-1] openssl security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6531-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso September 30, 2026 https://www.debian.org/security/faq -...

CVE-2026-72897

creationtimestamp| type| source ---|---|--- 2026-09-30 04:12:47+00:00| seen| https://www.acn.gov.it/portale/w/risolte-vulnerabilita-in-openssl-3 2026-09-30 12:50:15+00:00| seen| https://bsky.app/profile/o2cloud.bsky.social/post/3mwqeysp7gg2x 2026-10-13 12:01:15+00:00| seen|...

openssl openssl-4.0.3

Welcome to the OpenSSL Project !openssl logowww.openssl.org !github actions ci badgegithub actions ci OpenSSL is a robust, commercial-grade, full-featured Open Source Toolkit for the Transport Layer Security TLS, formerly SSL, Datagram TLS DTLS, and QUIC protocols. The protocol implementations ar...

Rocky Linux 9.6 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl (ALMALINUX9.6:CLSA-2026:1786493710)

The Rocky Linux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1786493710 advisory. - Issue summary: Converting an excessively large OCTET STRING value to a hexadecimal string leads to a heap buffer overflow on 32 bit...

AlmaLinux 9.2 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl (ALMALINUX9.2:CLSA-2024:1735119353)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2024:1735119353 advisory. - Issue summary: Calling the OpenSSL API function SSLfreebuffers may cause memory to be accessed that was previously freed in some situations...

OpenSSL Toolkit 3.5.9

OpenSSL is a robust, fully featured Open Source toolkit implementing the Secure Sockets Layer and Transport Layer Security protocols with full-strength cryptography world-wide. This is the 3.6 release...

OpenSSL Toolkit 4.0.3

OpenSSL is a robust, fully featured Open Source toolkit implementing the Secure Sockets Layer and Transport Layer Security protocols with full-strength cryptography world-wide. This is the 3.6 release...

OpenSSL Toolkit 3.6.5

OpenSSL is a robust, fully featured Open Source toolkit implementing the Secure Sockets Layer and Transport Layer Security protocols with full-strength cryptography world-wide. This is the 3.6 release...

OpenSSL Toolkit 3.4.8

OpenSSL is a robust, fully featured Open Source toolkit implementing the Secure Sockets Layer and Transport Layer Security protocols with full-strength cryptography world-wide. This is the 3.6 release...