FreeBSD OS Vulnerabilities Allow DoS, Code Execution, Bypass

CERT-Bund has released security advisory WID-SEC-2026-0878 concerning multiple vulnerabilities in FreeBSD Project FreeBSD OS. These vulnerabilities, rated with a CVSS base score of 7.5 (High) and a temporal score of 6.5 (Medium), allow remote attackers to perform denial-of-service attacks, execute arbitrary code, and bypass security mechanisms. The advisory specifically impacts FreeBSD OS Stable versions prior to 15.0, 14.4, and 13.5.

Organizations using affected FreeBSD OS versions should review the advisory and apply available mitigations promptly. While the advisory does not specify a compliance deadline, immediate action is recommended to address the identified risks of code execution and denial of service. Affected systems include Linux and UNIX operating systems, with FreeBSD being a Unix derivative. Further information and version history can be found via the provided CVE and information links.