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CVE-2026-42009

GnuTLS

Description

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 could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.

CVSS 7.5EPSS 1.335%Risk 0.84
View source
Published
2026-05-18 13:16:32
Affected versions
unknown
Type
Package
Last modified
2026-07-23 12:17:54
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Operating systems
Linux