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.
- CVSS
- Not scored yetNVD has not published a score
- Exploited in the wild
- Not knownPublic exploit code; not in CISA KEV
- EPSS
- 6.8%chance of exploitation in the next 30 daystop 6% of scored CVEsFIRST score of 11 Nov 2026
- Fix
- Patch availablesee the advisories in the references
- Published
- 6 Aug 2025analysed here 12 Nov 2026
NVD hasn't published a CVSS score for this CVE yet. Severity and the CVSS vector appear here once it is scored upstream.
Summary
Triage
The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.
Affected products
| Product | Affected versions | Vendor says fixed in |
|---|---|---|
| TechPowerUp ThrottleStop | 3.0.0.0 and possibly othersVendor says fixed in: not stated |
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
Fix and mitigation
WAF and other mitigations
Can a WAF block it? No. The attack needs local access to the machine, so a WAF is not on its path.
Also consider: patch
Based on the attack vector (local or physical access). We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Remediation steps (AI-written)
Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.
Exploitation evidence
- CISA KEV catalog
- Not listed as of our last sync.
- Public exploit code
- Yes: 1 on Exploit-DB · 14 GitHub proofs of concept
- CISA SSVC
- exploitation none, automatable no, technical impact partialAssessed by CISA 6 Aug 2025 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.
Exploit-DB
GitHub proofs of concept
- DeathShotXD/0xKern3lCrush60 stars
- enessakircolak/CVE-2025-777122 stars
- wqsv/ThrottleStopPoC18 stars
- AmrHuss/throttlestop-exploit-rw15 stars
and 10 more repositories
Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.
Timeline
- 6 Aug 2025Published
- 6 Aug 2025CISA SSVC assessment: exploitation nonesame day later
- 6 Aug 2025CVE record last updatedsame day later
- 31 Aug 2025First public exploit or proof of concept24 days later
- 12 Nov 2026Analysed by vulneraibility.com439 days (about 1 year) later
Common questions
Is CVE-2025-7771 being exploited?
Not confirmed. CVE-2025-7771 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 6.8% probability of exploitation in the next 30 days.
How severe is CVE-2025-7771?
No severity score has been published for CVE-2025-7771 yet. Since April 2026 the NVD enriches only prioritised CVEs, so an unscored record means nobody has assessed it — not that the flaw is minor. Judge it from the vendor advisory and whether you run the affected software.
Is there a patch for CVE-2025-7771?
Yes. A fix has been recorded for CVE-2025-7771. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
References
3 references in the CVE record, grouped by the tags the record gives them.
Other links (3)
- github.com /klsecservices/Advisories/blob/master/K-TechPowerUp-2025-001.md
- techpowerup.com /download/techpowerup-throttlestop/
- securelist.com /av-killer-exploiting-throttlestop-sys/117026/
Where the data on this page comes from
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Exploit-DB: published exploits
- PoC-in-GitHub: GitHub repositories that claim a proof of concept
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
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