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Description

Use after free in Windows Hyper-V allows an authorized attacker to execute code over a network.

PUBLISHED Reserved 2025-02-26 | Published 2025-04-08 | Updated 2026-02-13 | Assigner microsoft




HIGH: 7.1CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-416: Use After Free

Product status

10.0.10240.0 (custom) before 10.0.10240.20978
affected

10.0.14393.0 (custom) before 10.0.14393.7969
affected

10.0.17763.0 (custom) before 10.0.17763.7136
affected

10.0.19044.0 (custom) before 10.0.19044.5737
affected

10.0.19045.0 (custom) before 10.0.19045.5737
affected

10.0.22621.0 (custom) before 10.0.22621.5189
affected

10.0.22631.0 (custom) before 10.0.22631.5189
affected

10.0.22631.0 (custom) before 10.0.22631.5189
affected

10.0.26100.0 (custom) before 10.0.26100.3775
affected

10.0.14393.0 (custom) before 10.0.14393.7969
affected

10.0.14393.0 (custom) before 10.0.14393.7969
affected

10.0.17763.0 (custom) before 10.0.17763.7136
affected

10.0.17763.0 (custom) before 10.0.17763.7136
affected

10.0.20348.0 (custom) before 10.0.20348.3453
affected

10.0.25398.0 (custom) before 10.0.25398.1551
affected

10.0.26100.0 (custom) before 10.0.26100.3775
affected

10.0.26100.0 (custom) before 10.0.26100.3775
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27491 (Windows Hyper-V Remote Code Execution Vulnerability) vendor-advisory patch

cve.org (CVE-2025-27491)

nvd.nist.gov (CVE-2025-27491)

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