VDB
DEBIAN-CVE-2026-4878
DEBIAN-CVE-2026-4878
PUBLISHED
CVSS 7 HIGH
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.
Risk Scores
CVSS 3.1
7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | libcap2 | 1:2.78-1, 1:2.77-1, 1:2.75-8 |
| Debian:11 | libcap2 | *, *, 0 |
| Debian:14 | libcap2 | 0, 2.77-1, 2.75-10 |
| Debian:13 | libcap2 | 1:2.78-1, 2.75-10, 0 |
Exploit Intelligence
- CVE-2026-4878.json (github-poc)
- .trivyignore.yml (github-poc)
- .trivyignore.yml (github-poc)
- .trivyignore.yml (github-poc)
- euvd_test.go (github-poc)
Timeline
- Apr 9, 2026 CVE Published
- May 16, 2026 CVE Updated