CVE-2026-80847: tcp: clamp route advmss to TCP_MIN_MSS

Overview

Severity

Medium (CVSS 4.4)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Sep

Released

2026-09-07

Last Updated

2026-09-24

EPSS Score

0.17% (percentile: 5.8%)

Affected Products (3)

Other

• 21684-17084
• 21932-17084
• 21892-17084

Security Updates (1)

• Security Update

Revision History

• 2026-09-07: Information published.
• 2026-09-23: Information published.
• 2026-09-24: Information published.
• 2026-09-24: Information published.