CVE-2026-80115 PassMark PerformanceTest, BurnInTest, and OSForensics Kernel Crash via DirectIo64.sys MSR Write IOCTL
Local attackers can escalate privileges or crash the system by exploiting insufficient MSR blocklist enforcement in PassMark kernel drivers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-80115?
CVE-2026-80115 is a medium-severity vulnerability in PassMark Software BurnInTest, published on 4 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
PassMark PerformanceTest before 11.1 build 1012, BurnInTest before 11.1 build 1000, and OSForensics before 11.1 build 1016 contain a privilege escalation and denial-of-service vulnerability in DirectIo64.sys that allows local attackers to read arbitrary Model-Specific Registers or write zero to any MSR through exposed IOCTLs with insufficient blocklist enforcement. Attackers can exploit the unrestricted write IOCTL to zero out the system call handler MSR, causing an immediate unrecoverable kernel crash on the next system call, or read security-sensitive MSRs used to locate kernel data structures.
Weakness: CWE-782
Which versions are affected by CVE-2026-80115?
How do I fix CVE-2026-80115?
No fix has been published for CVE-2026-80115 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-80115 being exploited?
There is no known exploitation of CVE-2026-80115 in the wild and no public exploit code.
Sources
Also known as GHSA-m6jq-8p5j-c6vp.