Improper input validation in Microsoft Windows 11 24h2
CVE-2025-29955
Improper input validation in Windows Hyper-V allows an unauthorized attacker to deny service locally.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000
Affected products
- Microsoft Windows 11 24h2
- Microsoft Windows 11 Version 24h2 — versions 10.0.26100.0
- Microsoft Windows Server 2022 23h2
- Microsoft Windows Server 2022, 23h2 Edition (Server Core Installation) — versions 10.0.25398.0
- Microsoft Windows Server 2025 — versions 10.0.26100.0
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025 (Server Core Installation) — versions 10.0.26100.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29955 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-29955?
- CVE-2025-29955 is a medium-severity vulnerability in Microsoft Windows 11 24h2, classified under Improper Input Validation. CVSS score: 6.2/10. Published 2025-05-13.
- How severe is CVE-2025-29955?
- Medium severity. CVSS v3 base score is 6.2 out of 10.
- Is CVE-2025-29955 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.