OnlyPatch
Windows LDAP - Lightweight Directory Access Protocol

CVE-2025-29954 — Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability

Important CVSS 5.9 EPSS 0.01117 2025-05 archive

Executive Summary

Uncontrolled resource consumption in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network.

Overview

5.9
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
MS Exploit Likelihood
Category Denial of Service
Weakness CWE-400: Uncontrolled Resource Consumption
Released May 13 2025
Last Updated May 13 2025
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.01117 — 0.6272 percentile
NVD CVSS 5.9 MEDIUM — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
High
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: 5.2

EPSS Score

0.01117
probability of exploitation in the next 30 days
0.6272 percentile - updated 2026-07-25
View on FIRST.org

Affected Products

26 affected products
Product KB Article Severity Impact Restart Required
Windows 10 for 32-bit Systems 5058387 (Security Update) Important Denial of Service Yes
Windows 10 for x64-based Systems 5058387 (Security Update) Important Denial of Service Yes
Windows 10 Version 1607 for 32-bit Systems 5058383 (Security Update) Important Denial of Service Yes
Windows 10 Version 1607 for x64-based Systems 5058383 (Security Update) Important Denial of Service Yes
Windows 10 Version 1809 for 32-bit Systems 5058392 (Security Update) Important Denial of Service Yes
Windows 10 Version 1809 for x64-based Systems 5058392 (Security Update) Important Denial of Service Yes
Windows 10 Version 21H2 for 32-bit Systems 5058379 (Security Update) Important Denial of Service Yes
Windows 10 Version 21H2 for ARM64-based Systems 5058379 (Security Update) Important Denial of Service Yes
Windows 10 Version 21H2 for x64-based Systems 5058379 (Security Update) Important Denial of Service Yes
Windows 10 Version 22H2 for 32-bit Systems 5058379 (Security Update) Important Denial of Service Yes
Windows 10 Version 22H2 for ARM64-based Systems 5058379 (Security Update) Important Denial of Service Yes
Windows 10 Version 22H2 for x64-based Systems 5058379 (Security Update) Important Denial of Service Yes
Windows 11 Version 22H2 for ARM64-based Systems 5058405 (Security Update) Important Denial of Service Yes
Windows 11 Version 22H2 for x64-based Systems 5058405 (Security Update) Important Denial of Service Yes
Windows 11 Version 23H2 for ARM64-based Systems 5058405 (Security Update) Important Denial of Service Yes
Windows 11 Version 23H2 for x64-based Systems 5058405 (Security Update) Important Denial of Service Yes
Windows Server 2008 for 32-bit Systems Service Pack 2 5058449 (Monthly Rollup) 5058429 (Security Only) Important Denial of Service 5055609 Base: 5.9 Temporal: 5.2 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.0.6003.23279 Yes None Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 5058449 (Monthly Rollup) 5058429 (Security Only) Important Denial of Service 5055609 Base: 5.9 Temporal: 5.2 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.0.6003.23279 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 5058449 (Monthly Rollup) 5058429 (Security Only) Important Denial of Service 5055609 Base: 5.9 Temporal: 5.2 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.0.6003.23279 Yes None Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 5058449 (Monthly Rollup) 5058429 (Security Only) Important Denial of Service 5055609 Base: 5.9 Temporal: 5.2 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.0.6003.23279 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 5058430 (Monthly Rollup) 5058454 (Security Only) Important Denial of Service 5055561 Base: 5.9 Temporal: 5.2 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.1.7601.27729 Yes None Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 5058430 (Monthly Rollup) 5058454 (Security Only) Important Denial of Service 5055561 Base: 5.9 Temporal: 5.2 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 6.1.7601.27729 Yes None Windows Server 2012 5058451 (Monthly Rollup) Important Denial of Service Yes
Windows Server 2012 (Server Core installation) 5058451 (Monthly Rollup) Important Denial of Service Yes
Windows Server 2012 R2 5058403 (Monthly Rollup) Important Denial of Service Yes
Windows Server 2012 R2 (Server Core installation) 5058403 (Monthly Rollup) Important Denial of Service Yes
Windows Server 2016 5058383 (Security Update) Important Denial of Service Yes
Windows Server 2016 (Server Core installation) 5058383 (Security Update) Important Denial of Service Yes
Windows Server 2019 5058392 (Security Update) Important Denial of Service Yes
Windows Server 2019 (Server Core installation) 5058392 (Security Update) Important Denial of Service Yes
Windows Server 2022 5058385 (Security Update) 5058500 (SecurityHotpatchUpdate) Important Denial of Service 5055526 Base: 5.9 Temporal: 5.2 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C 10.0.20348.3692 10.0.20348.3630 Yes None Windows Server 2022 (Server Core installation) 5058385 (Security Update) Important Denial of Service Yes
Windows Server 2022, 23H2 Edition (Server Core installation) 5058384 (Security Update) Important Denial of Service Yes

Patches

9 patches
Article Type Restart
5058387 Security Update Yes
5058383 Security Update Yes
5058392 Security Update Yes
5058379 Security Update Yes
5058405 Security Update Yes
5058451 Monthly Rollup Yes
5058403 Monthly Rollup Yes
5058385 Security Update Yes
5058384 Security Update Yes

Known Exploits

Acknowledgments

Erik Egsgard

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