CVE-2025-59502: Remote Procedure Call Denial of Service Vulnerability

Overview

Severity
High (CVSS 7.5)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Category
Denial of Service
Exploit Status
Not Exploited
Exploitation Likelihood
More Likely
Patch Tuesday
2025-Oct
Released
2025-10-14
EPSS Score
7.38% (percentile: 91.7%)

Description

Uncontrolled resource consumption in Windows Remote Procedure Call allows an unauthorized attacker to deny service over a network.

Affected Products (21)

Windows

  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows Server 2025 (Server Core installation)
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • 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

ESU

  • Windows 11 Version 22H2 for ARM64-based Systems
  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems

Security Updates (8)

Acknowledgments

<a href="https://www.linkedin.com/in/or-yair">Or Yair</a> with <a href="https://www.safebreach.com/">SafeBreach</a>

Revision History

  • 2025-10-14: Information published. This CVE was addressed by updates that were released in September 2025, but the CVE was inadvertently omitted from the September 2025 Security Updates. This is an informational change only. Customers who have already installed the September 2025 updates do not need to take any further action.