CVE-2026-80890: sctp: reject stale cookies with mismatched verification tags

Overview

Severity

Medium (CVSS 4.8)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-07

EPSS Score

0.18% (percentile: 7.4%)

Affected Products (1)

Other

• 21684-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-07: Information published.