CVE-2026-55950: DTLS listener crash via race condition in dtls_packet_demux causes denial of service for all sessions

Overview

Severity

Medium (CVSS 5.9)

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Jul

Released

2026-08-14

EPSS Score

0.38% (percentile: 31.0%)

Affected Products (1)

Other

• 21649-17084

Revision History

• 2026-08-14: Information published.