CVE-2025-59230
Published 2025-10-14 · Updated 2026-06-17 · Source secure@microsoft.com
Summary
CVE-2025-59230 is a high-severity (CVSS 7.8) vulnerability in Microsoft Windows. CISA added it to the Known Exploited Vulnerabilities catalog on October 14, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by November 4, 2025. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.
All 390 known-exploited Microsoft vulnerabilities →Description
Improper access control in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges locally.
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Microsoft — Windows
Name: Microsoft Windows Improper Access Control Vulnerability
Date added: 2025-10-14 · Due: 2025-11-04
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59230
- https://www.vicarius.io/vsociety/posts/cve-2025-59230-detection-script-elevation-of-privilege-vulnerability-affecting-windows-rasman
- https://www.vicarius.io/vsociety/posts/cve-2025-59230-mitigation-script-elevation-of-privilege-vulnerability-affecting-windows-rasman
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-59230