USN-8284-1 gnutls28 vulnerabilities

Joshua Rogers discovered that GnuTLS did not properly handle malformed DTLS handshake fragments in certain cases. A remote attacker could possibly use this issue to obtain sensitive information, or cause a denial of service. CVE-2026-33845 Haruto Kimura, Oscar Reparaz, and Zou Dikai discovered th...

Undefined Behavior for Input to API

Overview Affected versions of this package are vulnerable to Undefined Behavior for Input to API in the comparator function responsible for ordering Datagram Transport Layer Security DTLS packets by sequence numbers. An attacker can cause unstable packet ordering or undefined behavior by sending...

CVE-2026-42009 Gnutls: gnutls: denial of service via dtls packet reordering vulnerability

A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security DTLS packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This...

OPENSUSE-SU-2026:20778-1 Security update for gnutls

This update for gnutls fixes the following issues - CVE-2026-3832: cert-session: fix multi-entry OCSP revocation bypass bsc1263706. - CVE-2026-3833: x509/name-constraints: compare domain names case-insensitive bsc1263707. - CVE-2026-5260: lib/pkcs11privkey: guard against overreading on short...

SUSE-SU-2026:21815-1 Security update for gnutls

This update for gnutls fixes the following issues - CVE-2026-3832: cert-session: fix multi-entry OCSP revocation bypass bsc1263706. - CVE-2026-3833: x509/name-constraints: compare domain names case-insensitive bsc1263707. - CVE-2026-5260: lib/pkcs11privkey: guard against overreading on short...

[SECURITY] Fedora 42 Update: coturn-4.11.0-1.fc42

The Coturn TURN Server is a VoIP media traffic NAT traversal server and gatew ay. It can be used as a general-purpose network traffic TURN server/gateway, too. This implementation also includes some extra features. Supported RFCs: TURN specs: - RFC 5766 - base TURN specs - RFC 6062 - TCP relaying...

OESA-2026-2331 gnutls security update

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface API to access the secure communications protocols as well as APIs to parse and write X.509, PKCS 12, and other...

EUVD-2026-30486

Elixir WebRTC is an Elixir implementation of the W3C WebRTC API. Prior to 0.15.1 and 0.16.1, missing DTLS peer certificate fingerprint validation in the DTLS client active role removes one side of WebRTC's mutual authentication. The bug is not independently exploitable for media interception in...

CVE-2026-44700 Elixir WebRTC: Missing DTLS peer fingerprint validation in ex_webrtc client-role handshake

Elixir WebRTC is an Elixir implementation of the W3C WebRTC API. Prior to 0.15.1 and 0.16.1, missing DTLS peer certificate fingerprint validation in the DTLS client active role removes one side of WebRTC's mutual authentication. The bug is not independently exploitable for media interception in...

CVE-2026-44700

CVE-2026-44700 affects the Elixir WebRTC project (ex_webrtc). Before versions 0.15.1 and 0.16.1, the DTLS fingerprint validation was skipped when the DTLS client acts as the active party during handshake, effectively removing one side of WebRTC’s mutual authentication. This does not by itself ena...

CVE-2026-20182: Critical authentication bypass in Cisco Catalyst SD-WAN Controller (FIXED)

Overview While researching a critical authentication bypass vulnerability, CVE-2026-20127, which was exploited in-the-wild, Rapid7 Labs discovered a new authentication bypass vulnerability affecting Cisco Catalyst SD-WAN Controller formerly known as vSmart, CVE-2026-20182. This new authentication...

CLSA-2026-1778762233 gnutls: Fix of CVE-2026-33845

CVE-2026-33845: fix integer underflow in DTLS handshake reassembly that allowed a remote heap overrun via crafted zero-length fragments...

OESA-2026-2221 gnutls security update

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface API to access the secure communications protocols as well as APIs to parse and write X.509, PKCS 12, and other...

CLSA-2026-1778240890 gnutls: Fix of CVE-2026-33845

CVE-2026-33845: fix DTLS handshake parsing integer underflow leading to OOB read...

CLSA-2026-1778239503 gnutls: Fix of CVE-2026-33845

CVE-2026-33845: fix DTLS handshake parsing integer underflow leading to OOB read...

CLSA-2026-1778238907 gnutls: Fix of CVE-2026-33845

CVE-2026-33845: fix DTLS handshake fragment reassembly integer underflow and heap overrun by tracking fraglength instead of endoffset...

PT-2026-38776

Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE component: JSSE. Supported versions that are affected are Oracle Java SE: 11.0.17, 17.0.5, 19.0.1; Oracle GraalVM Enterprise Edition: 20.3.8, 21.3.4 and 22.3.0. Easily exploitable vulnerability allows...

pyOpenSSL: DTLS cookie callback buffer overflow

A flaw was found in pyOpenSSL. The setcookiegeneratecallback callback function can be used to generate DTLS cookies. When the callback returns a cookie string or byte sequence longer than 256 bytes, a buffer overflow can be triggered due to a missing bounds checking before copying the data to a...

Important: Red Hat Security Advisory: Satellite 6.17.8 Async Update

A new release is now available for Red Hat Satellite 6.17 for RHEL 9. Red Hat Satellite is a system management solution that allows organizations to configure and maintain their systems without the necessity to provide public Internet access to their servers or other client systems. It performs...

pyOpenSSL: DTLS cookie callback buffer overflow

A flaw was found in pyOpenSSL. The setcookiegeneratecallback callback function can be used to generate DTLS cookies. When the callback returns a cookie string or byte sequence longer than 256 bytes, a buffer overflow can be triggered due to a missing bounds checking before copying the data to a...