CVE-2025-29955
Windows Hyper-V Denial of Service Vulnerability
Improper input validation in Windows Hyper-V allows an unauthorized attacker to deny service locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Windows Hyper-V Denial of Service Vulnerability
Improper input validation in Windows Hyper-V allows an unauthorized attacker to deny service locally.
- Record
CVE-2025-29955- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2025-14421
Improper input validation in Windows Hyper-V allows an unauthorized attacker to deny service locally.
- Record
EUVD-2025-14421- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-v487-rh87-cwxh
Improper input validation in Windows Hyper-V allows an unauthorized attacker to deny service...
Improper input validation in Windows Hyper-V allows an unauthorized attacker to deny service locally.
- Record
GHSA-v487-rh87-cwxh- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
Improper input validation in Windows Hyper-V allows an unauthorized attacker to deny service locally.
- Record
CVE-2025-29955- CVSS 3.1
- 6.2 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-29955 is a medium vulnerability (CVSS 6.2) in Microsoft Windows 11 Version 24h2, published May 13, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.60%, the 49th percentile. No source names a fixed version.