CVE-2026-85790
MEDIUMCVSS 5.9/10EPSS 0.70%
Last modified
CVE-2026-85790 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.
Description
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 |
| Microsoft | Native.Quic.Msquic.Schannel | < 2.6.2 |
| Microsoft | Visual Studio 2022 | >= 17.14.0, < 17.14.42 |
| Microsoft | Visual Studio 2026 | >= 18.10.0, < 18.10.4 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85790Vendor Advisory, Patch
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-85790?
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
How severe is CVE-2026-85790?
CVE-2026-85790 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.
How do I fix CVE-2026-85790?
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-2026-85781Unverified ownership of a storage access point in the volume…8.7
- CVE-2026-85786Improper handling of highly compressed data in Amazon ion-ja…7.5
- CVE-2026-85787An incomplete list of disallowed inputs in the SQL validatio…6.5
- CVE-2026-85788Incomplete list of disallowed inputs in the mutable SQL dete…5.5
- CVE-2026-85789Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2026-8579Insufficient validation of untrusted input in Skia in Google…3.1
- CVE-2026-85791Heap-based buffer overflow in Windows Encrypting File System…7
- CVE-2026-85792Remote Code Execution in Windows Routing and Remote Access S…9.8
- CVE-2026-85793Exposure of sensitive system information to an unauthorized …5.5
- CVE-2026-85794Out-of-bounds read in Windows Routing and Remote Access Serv…5.5
- CVE-2026-85795Use after free in Windows Text Services Framework allows an …7.8
- CVE-2026-85796Numeric truncation error in Windows Installer allows an auth…7.8
Are you affected by CVE-2026-85790?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST