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Windows Remote Procedure Call

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

Moderate CVSS 7.5 EPSS 0.0097 2025-10 archive

Executive Summary

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

Overview

7.5
CVSS HIGH
Moderate
MS Severity
Not Exploited
MS Exploit Status
More Likely
MS Exploit Likelihood
Category Denial of Service
Released Oct 14 2025
Last Updated Oct 14 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.0097 — 0.5725 percentile
NVD CVSS 7.5 HIGH — matches MSRC

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
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
None
INTEGRITY
None
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.5

EPSS Score

0.0097
probability of exploitation in the next 30 days
0.5725 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

15 affected products
Product KB Article Severity Impact Restart Required
Windows 10 Version 1809 for 32-bit Systems 5065428 (Security Update) Moderate Denial of Service Yes
Windows 10 Version 1809 for x64-based Systems 5065428 (Security Update) Moderate Denial of Service Yes
Windows 10 Version 21H2 for 32-bit Systems 5065429 (Security Update) Moderate Denial of Service Yes
Windows 10 Version 21H2 for ARM64-based Systems 5065429 (Security Update) Moderate Denial of Service Yes
Windows 10 Version 21H2 for x64-based Systems 5065429 (Security Update) Moderate Denial of Service Yes
Windows 10 Version 22H2 for 32-bit Systems 5065429 (Security Update) Moderate Denial of Service Yes
Windows 10 Version 22H2 for ARM64-based Systems 5065429 (Security Update) Moderate Denial of Service Yes
Windows 10 Version 22H2 for x64-based Systems 5065429 (Security Update) Moderate Denial of Service Yes
Windows 11 Version 22H2 for ARM64-based Systems 5065431 (Security Update) Moderate Denial of Service Yes
Windows 11 Version 22H2 for x64-based Systems 5065431 (Security Update) Moderate Denial of Service Yes
Windows 11 Version 23H2 for ARM64-based Systems 5065431 (Security Update) Moderate Denial of Service Yes
Windows 11 Version 23H2 for x64-based Systems 5065431 (Security Update) Moderate Denial of Service Yes
Windows 11 Version 24H2 for ARM64-based Systems 5065426 (Security Update) 5065474 (SecurityHotpatchUpdate) Moderate Denial of Service 5063878 5064010 Base: 7.5 Temporal: 6.5 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 10.0.26100.6584 10.0.26100.6508 Yes None Windows 11 Version 24H2 for x64-based Systems 5065426 (Security Update) 5065474 (SecurityHotpatchUpdate) Moderate Denial of Service 5063878 5064010 Base: 7.5 Temporal: 6.5 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 10.0.26100.6584 10.0.26100.6508 Yes None Windows Server 2019 5065428 (Security Update) Moderate Denial of Service Yes
Windows Server 2019 (Server Core installation) 5065428 (Security Update) Moderate Denial of Service Yes
Windows Server 2022 5065432 (Security Update) 5065306 (Security Hotpatch Update) Moderate Denial of Service 5063880 5063812 Base: 7.5 Temporal: 6.5 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 10.0.20348.4171 10.0.20348.4106 Yes None Windows Server 2022 (Server Core installation) 5065432 (Security Update) 5065306 (Security Hotpatch Update) Moderate Denial of Service 5063880 5063812 Base: 7.5 Temporal: 6.5 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 10.0.20348.4171 10.0.20348.4106 Yes None Windows Server 2022, 23H2 Edition (Server Core installation) 5065425 (Security Update) Moderate Denial of Service Yes

Patches

4 patches
Article Type Restart
5065428 Security Update Yes
5065429 Security Update Yes
5065431 Security Update Yes
5065425 Security Update Yes

Known Exploits

Acknowledgments

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