CVE-2026-69440
HIGHCVSS 7/10EPSS 0.21%
Last modified
CVE-2026-69440 is a high-severity vulnerability rated 7/10 on the CVSS scale. Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 11 24h2 | < 10.0.26100.9445 |
| Microsoft | Windows 11 25h2 | < 10.0.26200.9445 |
| Microsoft | Windows 11 26h1 | < 10.0.28000.2954 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69440Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-69440?
Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-69440?
CVE-2026-69440 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.21% probability of exploitation in the next 30 days.
How do I fix CVE-2026-69440?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-69433Heap-based buffer overflow in Windows Error Reporting allows…7.8
- CVE-2026-69434Heap-based buffer overflow in Windows URL Moniker allows an …8.8
- CVE-2026-69435Missing authorization in Azure SRE Agent allows an authorize…8.1
- CVE-2026-69436Heap-based buffer overflow in Windows State Repository Servi…7.8
- CVE-2026-69438Incorrect conversion between numeric types in Microsoft JScr…8.1
- CVE-2026-69439Heap-based buffer overflow in .NET and Visual Studio allows …8.8
- CVE-2026-69441Concurrent execution using shared resource with improper syn…7
- CVE-2026-69442Heap-based buffer overflow in Microsoft Office allows an una…8.8
- CVE-2026-69443Out-of-bounds read in Microsoft Azure Attestation service an…7.5
- CVE-2026-69444Heap-based buffer overflow in Microsoft Windows Speech allow…7.8
- CVE-2026-69445Improper limitation of a pathname to a restricted directory …7.8
- CVE-2026-69446Incorrect authorization in Microsoft Edge (Chromium-based) a…4.4
Are you affected by CVE-2026-69440?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST