CVE-2026-119959
MEDIUMCVSS 5.3/10
Last modified
CVE-2026-119959 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Improper access control in Windows Hyper-V allows an authorized attacker to perform spoofing locally..
Description
Improper access control in Windows Hyper-V allows an authorized attacker to perform spoofing locally.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1809 | >= 10.0.17763.0, < 10.0.17763.9487 |
| Microsoft | Windows 10 Version 21H2 | >= 10.0.19044.0, < 10.0.19044.7846 |
| Microsoft | Windows 10 Version 22H2 | >= 10.0.19045.0, < 10.0.19045.7846 |
| Microsoft | Windows 11 version 23H2 | >= 10.0.22631.0, < 10.0.22631.7711 |
| Microsoft | Windows 11 Version 23H2 | >= 10.0.22631.0, < 10.0.22631.7711 |
| Microsoft | Windows 11 Version 24H2 | >= 10.0.26100.0, < 10.0.26100.9974 |
| Microsoft | Windows 11 Version 25H2 | >= 10.0.26200.0, < 10.0.26200.9974 |
| Microsoft | Windows 11 version 26H1 | >= 10.0.28000.0, < 10.0.28000.3501 |
| Microsoft | Windows 11 Version 26H2 | >= 10.0.26300.0, < 10.0.26300.9974 |
| Microsoft | Windows Server 2019 | >= 10.0.17763.0, < 10.0.17763.9487 |
| Microsoft | Windows Server 2019 (Server Core installation) | >= 10.0.17763.0, < 10.0.17763.9487 |
| Microsoft | Windows Server 2022 | >= 10.0.20348.0, < 10.0.20348.5870 |
| Microsoft | Windows Server 2025 | >= 10.0.26100.0, < 10.0.26100.33822 |
| Microsoft | Windows Server 2025 (Server Core installation) | >= 10.0.26100.0, < 10.0.26100.33822 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-119959?
Improper access control in Windows Hyper-V allows an authorized attacker to perform spoofing locally.
How severe is CVE-2026-119959?
CVE-2026-119959 has a CVSS score of 5.3/10 (MEDIUM severity).
How do I fix CVE-2026-119959?
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.
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Are you affected by CVE-2026-119959?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST