Vulnerability Report

CVE-2025-21204

Title: Microsoft Windows 10 22H2

Other

Proof Of Concept

PoC Available for CVE-2025-21204

CWE Category CWE-59

Published Date Apr 08, 2025

Modified Date Jul 09, 2025

Exploit Status Available

Score 7.8 CVSS v3.1

Exploit Probability (EPSS)

6.39%

Vulnerability Summary

CVE-2025-21204: Improper link resolution before file access ('link following') in Windows Update Stack allows an authorized attacker to elevate privileges locally.

Impacted Vendors

microsoft 15

Reference Links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21204 https://www.vicarius.io/vsociety/posts/cve-2025-21204-privilege-elevation-vulnerability-in-microsoft-windows-update-stack-detection-script https://www.vicarius.io/vsociety/posts/cve-2025-21204-privilege-elevation-vulnerability-in-microsoft-windows-update-stack-mitigation-script

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.8

Attack Vector

LOCAL

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-21204 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/mmotti/Reset-inetpub

View Code

July 09, 2025 MODIFIED

Vulnerability data or affected products updated.

July 09, 2025 MODIFIED

Vulnerability data updated via NVD.

April 08, 2025 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.