CVE-2025-21204

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

CVSS v3.1

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

EPSS

6.94% chance of exploitation in the next 30 days, 94th percentile

Published

2025-04-08

Updated

2026-08-10

Proof-of-concept exploits (2)

• HexCore8/exploits
• hackerhouse-opensource/exploits

References

• CVE Record
• NVD entry

Related

• CVE-2018-10933
• CVE-2021-34527
• CVE-2025-2120
• CVE-2025-2121
• CVE-2025-2119
• CVE-2025-2122