🛡️ CVE-2025-27491 — windows-10-1507
Description
Use after free in Windows Hyper-V allows an authorized attacker to execute code over a network.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.
Weakness class
CVE-2025-27491 is classified as CWE-416: Use After Free. Memory is used after being released, so its contents may already belong to something else.
Affected software
CVE-2025-27491 is recorded against 13 packages.
- windows-10-1507 (fixed in 10.0.10240.20978)
- windows-10-1607 (fixed in 10.0.14393.7969)
- windows-10-1809 (fixed in 10.0.17763.7136)
- windows-10-21h2 (fixed in 10.0.19044.5737)
- windows-10-22h2 (fixed in 10.0.19045.5737)
- windows-11-22h2 (fixed in 10.0.22621.5189)
- windows-11-23h2 (fixed in 10.0.22631.5189)
- windows-11-24h2 (fixed in 10.0.26100.3775)
- windows-server-2016 (fixed in 10.0.14393.7969)
- windows-server-2019 (fixed in 10.0.17763.7136)
- windows-server-2022 (fixed in 10.0.20348.3453)
- windows-server-2022-23h2 (fixed in 10.0.25398.1551)
- windows-server-2025 (fixed in 10.0.26100.3775)
Timeline and source
Published on 8 April 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.
References
Details
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| windows-10-1507 | — | 10.0.10240.20978 |
| windows-10-1607 | — | 10.0.14393.7969 |
| windows-10-1809 | — | 10.0.17763.7136 |
| windows-10-21h2 | — | 10.0.19044.5737 |
| windows-10-22h2 | — | 10.0.19045.5737 |
| windows-11-22h2 | — | 10.0.22621.5189 |
| windows-11-23h2 | — | 10.0.22631.5189 |
| windows-11-24h2 | — | 10.0.26100.3775 |
| windows-server-2016 | — | 10.0.14393.7969 |
| windows-server-2019 | — | 10.0.17763.7136 |
| windows-server-2022 | — | 10.0.20348.3453 |
| windows-server-2022-23h2 | — | 10.0.25398.1551 |
| windows-server-2025 | — | 10.0.26100.3775 |
References
Similar Threats
- High CVE-2022-35743
- Critical CVE-2022-35744
- High CVE-2022-35745
- High CVE-2022-35746
- Medium CVE-2022-35747
More CVE 2025 advisories
Browse all of CVE 2025 in the advisory index.
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