CVE-2026-4878: Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()

Overview

Severity

Medium (CVSS 6.7)

CVSS Vector

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

Exploit Status

Not Exploited

Patch Tuesday

2026-Apr

Released

2026-04-11

EPSS Score

0.01% (percentile: 1.3%)

Affected Products (2)

Other

• 21190-17086
• 21191-17084

Revision History

• 2026-04-11: Information published.