Gnutls: gnutls: denial of service via dtls packet reordering vulnerability
Historical advisory recorded 30 Oct 2026 18:45:26 UTC. Read the latest advisory.
cve-program · CVE-2026-42009
PublishedA 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.
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cve-program · CVE-2026-42009
PublishedGnutls: 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 could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.
- Source published
- 18 May 2026 12:44:45 UTC
- Source modified
- 30 Oct 2026 17:06:30 UTC
- Saved here
- 30 Oct 2026 18:45:26 UTC
- Source terms
- CVE Program Terms of Use
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CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H