MEDIUM 6.7 Microsoft
CVE-2026-4878
Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()
Microsoft Security Update 2026-Apr: Libcap: libcap: privilege escalation via toctou race condition in cap_set_file()
Affected Products
- cbl2 libcap 2.60-7 on CBL-Mariner 2.0
- cbl2 libcap 2.60-7 on CBL Mariner 2.0
- azl3 libcap 2.69-13 on Azure Linux 3.0
- azl3 libcap 2.69-14 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-4878
- https://nvd.nist.gov/vuln/detail/CVE-2026-4878
This medium severity vulnerability with a CVSS score of 6.7 was published on 2026-04-14 via Microsoft. Affected: cbl2 libcap 2.60-7 on CBL-Mariner 2.0, cbl2 libcap 2.60-7 on CBL Mariner 2.0, azl3 libcap 2.69-13 on Azure Linux 3.0 and 1 more.
vulnfeed aggregates 14156 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.