CVE-2026-97568: mptcp: syncookies: remember the request backup flag

Overview

Severity

High (CVSS 7.1)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-28

EPSS Score

0.20% (percentile: 8.8%)

Affected Products (1)

Other

• 21932-17084

Revision History

• 2026-09-28: Information published.