CVE-2025-7771
ThrottleStop.sys, a legitimate driver, exposes two IOCTL interfaces that allow arbitrary read and write access to physical memory via the MmMapIoSpace function. This insecure implementation can be exploited by a malicious user-mode application to patch the running Windows kernel and invoke arbitrary kernel functions with ring-0 privileges. The vulnerability enables local attackers to execute arbitrary code in kernel context, resulting in privilege escalation and potential follow-on attacks, such as disabling security software or bypassing kernel-level protections. ThrottleStop.sys version 3.0.0.0 and possibly others are affected. Apply updates per vendor instructions.
- Score
- CVSS 4.0 8.7 High
- Status
- Deferred - vulnerability@kaspersky.com
- Published
- 2025-08-06
- Last modified
- 2025-08-06
- Weaknesses
- CWE-782
Affected products
References
- https://github.com/klsecservices/Advisories/blob/master/K-TechPowerUp-2025-001.md
- https://securelist.com/av-killer-exploiting-throttlestop-sys/117026/
- https://www.techpowerup.com/download/techpowerup-throttlestop/
