CVE-2026-62898
HIGHCVSS 7.5/10EPSS 1.14%
Last modified
CVE-2026-62898 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.. EPSS estimates a 1.14% 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 | Visual Studio 2022 | >= 17.14.0, < 17.14.38 |
| Microsoft | Visual Studio 2026 | >= 18.8.0, < 18.8.3 |
| Microsoft | .Net | >= 8.0.0, < 8.0.30 |
| Microsoft | .Net | >= 9.0.0, < 9.0.19 |
| Microsoft | .Net | >= 10.0.0, < 10.0.11 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62898Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-62898?
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
How severe is CVE-2026-62898?
CVE-2026-62898 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.14% probability of exploitation in the next 30 days.
How do I fix CVE-2026-62898?
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-2026-62892Use after free in Capability Access Management Service (cams…7
- CVE-2026-62893Use after free in Windows Deployment Services allows an unau…9.8
- CVE-2026-62894Heap-based buffer overflow in Windows DWM Core Library allow…7.8
- CVE-2026-62895Permissive cross-domain policy with untrusted domains in Azu…8.8
- CVE-2026-62896Improper authentication in Microsoft Teams allows an authori…9.6
- CVE-2026-62897Integer overflow or wraparound in .NET Framework allows an u…7
- CVE-2026-62899Inconsistent interpretation of http requests ('http request/…5.9
- CVE-2026-6290Velociraptor versions prior to 0.76.3 contain a vulnerabilit…9.1
- CVE-2026-62900Improper removal of sensitive information before storage or …5.9
- CVE-2026-62901Unchecked input for loop condition in .NET allows an unautho…7.5
- CVE-2026-62902Inclusion of functionality from untrusted control sphere in …6.5
- CVE-2026-62904Incorrect authorization in Microsoft Edge (Chromium-based) a…5.4
Are you affected by CVE-2026-62898?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST