CVE-2026-4747 – FreeBSD Kernel Memory Handling

CVSS 8.8 IMPORTANT

“Even trusted operating systems can be turned against themselves when critical bugs surface.”

This FreeBSD patch addresses two high-severity vulnerabilities impacting core system security. CVE-2026-4747 presents a significant risk with the potential for system compromise through exploitable conditions, while CVE-2026-42511 further weakens system integrity and stability. Together, these issues increase the likelihood of unauthorized access or disruption across affected environments.

CVE-2026-4747 has a CVSS score of 8.8, which is High severity. CVE-2026-42511 has a CVSS score of 8.1, which is High severity. Proof-of-concept code is available for CVE-2026-4747, confirming that exploitation is feasible. There is no verified evidence of exploitation or public proof-of-concept code for CVE-2026-42511.

Key Details

Affected Product
Freebsd Freebsd
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
CWE Classification
CWE-121
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