CVE-2026-81354
HIGHCVSS 8.2/10EPSS 0.24%
Last modified
CVE-2026-81354 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 1809 | < 10.0.17763.9245 |
| Microsoft | Windows 10 21h2 | < 10.0.19044.7725 |
| Microsoft | Windows 10 22h2 | < 10.0.19045.7725 |
| Microsoft | Windows 11 23h2 | < 10.0.22631.7582 |
| Microsoft | Windows 11 24h2 | < 10.0.26100.9445 |
| Microsoft | Windows 11 25h2 | < 10.0.26200.9445 |
| Microsoft | Windows 11 26h1 | < 10.0.28000.2954 |
| Microsoft | Windows Server 2019 | < 10.0.17763.9245 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81354Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-81354?
Heap-based buffer overflow in Windows Hello allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-81354?
CVE-2026-81354 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2026-81354?
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-2026-81347The Frontend Admin by DynamiApps WordPress plugin before 3.2…5.9
- CVE-2026-81348The My Private Site WordPress plugin before 4.2.3 does not …3.7
- CVE-2026-81349Improper neutralization of special elements used in an os co…7.2
- CVE-2026-8135Concrete CMS 9.5.0 and below is vulnerable to Remote Code Ex…7.2
- CVE-2026-81352Heap-based buffer overflow in Microsoft Windows Codecs Libra…8.8
- CVE-2026-81353Heap-based buffer overflow in Microsoft Windows Codecs Libra…7.8
- CVE-2026-81355Heap-based buffer overflow in Virtual Hard Disk (VHD) Minipo…7.5
- CVE-2026-81356Inconsistent interpretation of http requests ('http request/…8.2
- CVE-2026-81357Server-side request forgery (ssrf) in Visual Studio Code all…8.2
- CVE-2026-8136A flaw has been found in SourceCodester Pharmacy Sales and I…2.4
- CVE-2026-8137A vulnerability has been found in Totolink X5000R 9.1.0u.636…8.8
- CVE-2026-81376Incomplete comparison with missing factors in Visual Studio …9.6
Are you affected by CVE-2026-81354?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST