CVE-2026-50356
HIGHCVSS 7/10EPSS 0.15%
Last modified
CVE-2026-50356 is a high-severity vulnerability rated 7/10 on the CVSS scale. Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows App Store allows an authorized attacker to elevate privileges locally.. EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows App Store 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 | < 10.0.14393.9339 |
| Microsoft | Windows 10 1809 | < 10.0.17763.9020 |
| Microsoft | Windows 10 21h2 | < 10.0.19044.7548 |
| Microsoft | Windows 10 22h2 | < 10.0.19045.7548 |
| Microsoft | Windows 11 24h2 | < 10.0.26100.8875 |
| Microsoft | Windows 11 25h2 | < 10.0.26200.8875 |
| Microsoft | Windows 11 26h1 | < 10.0.28000.2269 |
| Microsoft | Windows 11 26h1 | < 10.0.28000.2525 |
| Microsoft | Windows Server 2016 | < 10.0.14393.9339 |
| Microsoft | Windows Server 2019 | < 10.0.17763.9020 |
| Microsoft | Windows Server 2022 | < 10.0.20348.5386 |
| Microsoft | Windows Server 2025 | < 10.0.26100.33158 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50356Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-50356?
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Windows App Store allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-50356?
CVE-2026-50356 has a CVSS score of 7/10 (HIGH severity). The EPSS model estimates a 0.15% probability of exploitation in the next 30 days.
How do I fix CVE-2026-50356?
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-2026-50350Exposure of sensitive information to an unauthorized actor i…5.5
- CVE-2026-50351Improper access control in Windows Audio Compression Manager…7.8
- CVE-2026-50352Exposure of sensitive information to an unauthorized actor i…5.5
- CVE-2026-50353Use after free in Windows DirectX allows an authorized attac…7.8
- CVE-2026-50354Use after free in Windows Kernel allows an authorized attack…7.1
- CVE-2026-50355Stack-based buffer overflow in Active Directory Federation S…7.5
- CVE-2026-50357Numeric truncation error in Windows Resilient File System (R…7.8
- CVE-2026-50358Use after free in Windows Media allows an authorized attacke…7.8
- CVE-2026-50359Use after free in Microsoft XML Core Services allows an auth…7.8
- CVE-2026-5036A vulnerability was found in Tenda 4G06 04.06.01.29. This vu…8.8
- CVE-2026-50360Incorrect implementation of authentication algorithm in Wind…8.8
- CVE-2026-50361Double free in Microsoft Brokering File System allows an aut…7.8
Are you affected by CVE-2026-50356?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST