CVE-2026-70290
MEDIUMCVSS 5.5/10EPSS 0.40%
Last modified
CVE-2026-70290 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 1607 | < 10.0.14393.9512 |
| 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 2012 | All versions |
| Microsoft | Windows Server 2012 | r2 |
| Microsoft | Windows Server 2016 | < 10.0.14393.9512 |
| Microsoft | Windows Server 2019 | < 10.0.17763.9245 |
| Microsoft | Windows Server 2022 | < 10.0.20348.5622 |
| Microsoft | Windows Server 2025 | < 10.0.26100.33438 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70290Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-70290?
Use of uninitialized resource in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
How severe is CVE-2026-70290?
CVE-2026-70290 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.
How do I fix CVE-2026-70290?
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-2026-7026A vulnerability was determined in D-Link DGS-3420 1.50.018. …4.8
- CVE-2026-7027A vulnerability was identified in D-Link DSL-2740R EU_01.15.…4.8
- CVE-2026-7028A security flaw has been discovered in CodeAstro Online Job …4.7
- CVE-2026-70283Incorrect authorization in Windows Win32K allows an authoriz…7
- CVE-2026-70289Heap-based buffer overflow in Windows Win32 Kernel Subsystem…7.8
- CVE-2026-7029A weakness has been identified in Tenda F456 1.0.0.5. The im…8.8
- CVE-2026-70296Out-of-bounds write in Windows Imaging Component allows an u…9.8
- CVE-2026-7030A security vulnerability has been detected in Tenda F456 1.0…8.8
- CVE-2026-70304Heap-based buffer overflow in Windows DNS allows an authoriz…7.8
- CVE-2026-70306Improper neutralization of input during web page generation …9.3
- CVE-2026-70307Use after free in Windows Ancillary Function Driver for WinS…7
- CVE-2026-70309Origin validation error in Microsoft Edge (Chromium-based) a…5.4
Are you affected by CVE-2026-70290?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST