Local low-privilege elevation to SYSTEM
Published Jan 14, 2025 · Updated Jun 9, 2026
Improper authorization in Microsoft Windows App Package Installer allows local users with low privileges to gain SYSTEM privileges. Microsoft identifies the affected component and weakness but has not published the authorization check, code path, or input that is mishandled. Exploitation requires local low-privilege access and grants full SYSTEM control over confidentiality, integrity, and availability.
Summary
What happened
Improper authorization in Microsoft Windows App Package Installer allows local users with low privileges to gain SYSTEM privileges. Microsoft identifies the affected component and weakness but has not published the authorization check, code path, or input that is mishandled. Exploitation requires local low-privilege access and grants full SYSTEM control over confidentiality, integrity, and availability.
The record
- CVE
- CVE-2025-21275
- Published
- Jan 14, 2025
- Updated
- Jun 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-285
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 14, 2025CVE publishedPublication date reported by the CVE source.
- Jun 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.26100.0 <10.0.26100.2894
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo