PT-2026-58229 · Microsoft · Hyper-V+1

CVE-2026-54129

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Published

2026-07-14

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Updated

2026-07-20

CVSS v3.1

7.8

High

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Name of the Vulnerable Software and Affected Versions Windows Hyper-V (affected versions not specified)
Description A use after free issue exists in Windows Hyper-V, which allows an authorized attacker to elevate privileges locally. This flaw can enable an attacker with low-privilege access to gain full control over the host system. Use after free is a memory corruption flaw that occurs when an application continues to use a pointer after it has been freed, potentially leading to arbitrary code execution.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Use After Free

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Weakness Enumeration

Related Identifiers

CVE-2026-54129
ZDI-26-416

Affected Products

Hyper-V
Windows