Dtls

A remote attacker could exploit a flaw in GnuTLS's DTLS packet reordering logic (CVE-2026-42009) to cause unstable packet ordering or undefined behavior, resulting in a denial of service.

The ex_webrtc library is vulnerable to a man-in-the-middle attack due to missing DTLS peer certificate fingerprint validation in the DTLS client role, potentially allowing interception of media and data channels when chained with insecure signaling or a peer with similar validation gaps; upgrade to versions 0.15.1 or 0.16.1 to mitigate this vulnerability.

A heap buffer overflow vulnerability, CVE-2026-33846, exists in the DTLS handshake fragment reassembly logic of GnuTLS, allowing unauthenticated remote attackers to cause application crashes or potential memory corruption by sending crafted DTLS fragments with conflicting message lengths.