CVE-2026-96309
HIGHCVSS 7.8/10EPSS 0.32%
Last modified
CVE-2026-96309 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.32% chance of exploitation in the next 30 days.
Description
Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 21h2 | < 10.0.19044.7807 |
| Microsoft | Windows 10 22h2 | < 10.0.19045.7807 |
| Microsoft | Windows 11 23h2 | < 10.0.22631.7652 |
| Microsoft | Windows 11 24h2 | < 10.0.26100.9711 |
| Microsoft | Windows 11 25h2 | < 10.0.26200.9711 |
| Microsoft | Windows 11 26h1 | < 10.0.28000.3231 |
| Microsoft | Windows 11 26h2 | < 10.0.26300.9711 |
| Microsoft | Windows Server 2022 | < 10.0.20348.5761 |
| Microsoft | Windows Server 2025 | < 10.0.26100.33650 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96309Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-96309?
Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-96309?
CVE-2026-96309 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.
How do I fix CVE-2026-96309?
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-2026-96303Improperly implemented security check for standard in Micros…6.5
- CVE-2026-96304Use after free in Windows USB Print Driver allows an authori…7
- CVE-2026-96305Use after free in Windows Installer allows an authorized att…7
- CVE-2026-96306Out-of-bounds read in Windows Sysmain Service allows an auth…7.8
- CVE-2026-96307Use after free in Windows Installer allows an authorized att…7
- CVE-2026-96308Use after free in Windows Installer allows an authorized att…7.8
- CVE-2026-9631A vulnerability was detected in UTT HiPER 1250GW up to 3.2.7…8.8
- CVE-2026-96310Use after free in Windows USB Print Driver allows an authori…7
- CVE-2026-96311Improper authorization in Windows Network List Service allow…5.5
- CVE-2026-96312Heap-based buffer overflow in Windows Kernel allows an autho…7.8
- CVE-2026-96313Missing authentication for critical function in Windows Push…7
- CVE-2026-96314Out-of-bounds read in Windows Audio Service allows an author…5.5
Are you affected by CVE-2026-96309?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST