CVE-2026-20836
HIGHCVSS 7/10EPSS 0.29%
Last modified
CVE-2026-20836 is a high-severity vulnerability rated 7/10 on the CVSS scale. Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 1607 | < 10.0.14393.8783 |
| Microsoft | Windows 10 1809 | < 10.0.17763.8276 |
| Microsoft | Windows 10 21h2 | < 10.0.19044.6809 |
| Microsoft | Windows 10 22h2 | < 10.0.19045.6809 |
| Microsoft | Windows 11 23h2 | < 10.0.22631.6491 |
| Microsoft | Windows 11 24h2 | < 10.0.26100.7623 |
| Microsoft | Windows 11 25h2 | < 10.0.26200.7623 |
| Microsoft | Windows Server 2016 | < 10.0.14393.8783 |
| Microsoft | Windows Server 2019 | < 10.0.17763.8276 |
| Microsoft | Windows Server 2022 | < 10.0.20348.4648 |
| Microsoft | Windows Server 2022 23h2 | < 10.0.25398.2092 |
| Microsoft | Windows Server 2025 | < 10.0.26100.32230 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-20836?
Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-20836?
CVE-2026-20836 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.
How do I fix CVE-2026-20836?
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-2026-20830Concurrent execution using shared resource with improper syn…7
- CVE-2026-20831Time-of-check time-of-use (toctou) race condition in Windows…7
- CVE-2026-20832Windows Remote Procedure Call Interface Definition Language …7.8
- CVE-2026-20833Use of a broken or risky cryptographic algorithm in Windows …5.5
- CVE-2026-20834Absolute path traversal in Windows Shell allows an unauthori…4.6
- CVE-2026-20835Out-of-bounds read in Capability Access Management Service (…5.5
- CVE-2026-20837Heap-based buffer overflow in Windows Media allows an unauth…7.8
- CVE-2026-20838Generation of error message containing sensitive information…5.5
- CVE-2026-20839Improper access control in Windows Client-Side Caching (CSC)…5.5
- CVE-2026-2084A weakness has been identified in D-Link DIR-823X 250416. Th…7.3
- CVE-2026-20840Heap-based buffer overflow in Windows NTFS allows an authori…7.8
- CVE-2026-20841Improper neutralization of special elements used in a comman…7.8
Are you affected by CVE-2026-20836?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST