CVE-2025-55694: Windows Error Reporting Service Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

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

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2025-Oct

Released

2025-10-14

EPSS Score

0.08% (percentile: 23.1%)

Description

Improper access control in Windows Error Reporting allows an authorized attacker to elevate privileges locally.

FAQ

What privileges could be gained by an attacker who successfully exploited the vulnerability? An attacker who successfully exploited this vulnerability could gain administrator privileges.

Affected Products (7)

Windows

• Windows 11 Version 25H2 for x64-based Systems
• Windows 11 Version 25H2 for ARM64-based Systems
• Windows Server 2025 (Server Core installation)
• Windows Server 2022, 23H2 Edition (Server Core installation)
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 for x64-based Systems
• Windows Server 2025

Security Updates (2)

• 5066835
• 5066780

Acknowledgments

Denis Faiustov and Ruslan Sayfiev with <a href="https://gmo-cybersecurity.com/en/">GMO Cybersecurity by Ierae</a>

Revision History

• 2025-10-14: Information published.