CVE-2026-22701: filelock Time-of-Check-Time-of-Use (TOCTOU) Symlink Vulnerability in SoftFileLock

Overview

Severity

Medium (CVSS 5.3)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Jan

Released

2026-01-13

Last Updated

2026-09-08

EPSS Score

0.13% (percentile: 2.1%)

Affected Products (3)

Other

• 21025-17086
• 21025-21692
• 20814-17084

Security Updates (1)

• CBL-Mariner Releases

Revision History

• 2026-01-13: Information published.
• 2026-02-18: Information published.
• 2026-03-07: Information published.
• 2026-04-29: Information published.
• 2026-08-10: Information published.
• 2026-09-08: Information published.