CVE-2026-99999: ipv4: validate checksum_start before completing checksum

Overview

Severity

Critical (CVSS 9.3)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Oct

Released

2026-10-16

Last Updated

2026-10-16

EPSS Score

0.21% (percentile: 10.7%)

Detection & Weaponization (1 sources)

Maturity: Exploit

• GitHub PoC: 1 repositories

Affected Products (1)

Other

• 21932-17084

Revision History

• 2026-10-16: Information published.
• 2026-10-16: Information published.