CVE-2025-7771 EXPLOIT
?
unscored · CVSS · EPSS 8% (pctl 95)
Patch early
A public exploit exists.
Description
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.
Scoring
| CVSS | unscored |
|---|---|
| EPSS | 8.01% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-782 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2025-08-06 |
| Last modified | 2026-06-17 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Throttlestop Kernel Driver - Kernel Out-of-Bounds Write Privilege Escalation | 2026-04-22 |
References
→ the Explorer · watch your stack · NVD