ZDI-CAN-31968: ZDI-26-784: FreeBSD Kernel kqueue Use-After-Free Local Privilege Escalation Vulnerability
This vulnerability allows local attackers to escalate privileges on affected installations of FreeBSD Kernel. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.8. The following CVEs are assigned: CVE-2026-58093.
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Systems running the affected FreeBSD Kernel are exposed when an attacker can execute low-privileged code locally on the target. This is a local privilege-escalation issue rather than a remotely exploitable issue based on the available information.
What level of access does an attacker need before exploitation?
The attacker must first be able to execute low-privileged code on the target system. The provided information does not indicate that unauthenticated remote access alone is sufficient.