EUVD-2026-20910CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Tags
Description
A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By doing so, capabilities can be injected into or stripped from unintended executables, leading to privilege escalation.
Analysis
Local privilege escalation in libcap allows unprivileged users to exploit a race condition in cap_set_file() by redirecting capability updates to attacker-controlled files via symlink manipulation in parent directories. An authenticated local attacker with write access to a parent directory and user interaction can inject or strip capabilities from arbitrary executables, achieving privilege escalation. …
Sign in for full analysis, threat intelligence, and remediation guidance.
Priority Score
Share
External POC / Exploit Code
Leaving vuln.today