CVE-2026-42009

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.

Score
CVSS 3.1 7.5 High
Status
Modified - secalert@redhat.com
Published
2026-05-18
Last modified
2026-10-26
Weaknesses
CWE-475

Affected products

References

 
 
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