CVE-2025-27469: Windows Lightweight Directory Access Protocol (LDAP) Denial of Service Vulnerability
First published: Tue Apr 08 2025(Updated: )
<p>Uncontrolled resource consumption in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network.</p>
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows Server | ||
| Microsoft Windows Server 2012 R2 | ||
| Windows 10 | =1607 | |
| Microsoft Windows Server 2025 | ||
| Windows 10 | =21H2 | |
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Windows 10 | =22H2 | |
| Windows 11 | =24H2 | |
| Microsoft Windows Server 2019 | ||
| Windows 10 | =1607 | |
| Windows 11 | =22H2 | |
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server 2022 23H2 | ||
| Microsoft Windows Server | ||
| Windows 11 | =24H2 | |
| Windows 10 | =21H2 | |
| Windows 11 | =23H2 | |
| Windows 11 | =23H2 | |
| Windows 10 | =1809 | |
| Windows 10 | =22H2 | |
| Windows 10 | =21H2 | |
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2022 | ||
| Windows 11 | =22H2 | |
| Windows 10 | =1809 | |
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2016 | ||
| Windows 10 | =22H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server | ||
| Windows 10 | ||
| Windows 10 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-27469?
CVE-2025-27469 is classified as a denial-of-service vulnerability that allows an unauthorized attacker to disrupt service in Windows LDAP.
How do I fix CVE-2025-27469?
To fix CVE-2025-27469, apply the appropriate patches provided by Microsoft for the affected Windows Server and Windows 10 versions.
Which versions of Windows are affected by CVE-2025-27469?
CVE-2025-27469 affects multiple versions of Windows including Windows Server 2008, 2012, 2016, 2019, 2022, Windows 10, and Windows 11.
What systems are particularly vulnerable to CVE-2025-27469?
Systems running outdated versions of Windows with LDAP services enabled are particularly vulnerable to CVE-2025-27469.
Can CVE-2025-27469 be exploited remotely?
Yes, CVE-2025-27469 allows unauthorized attackers to exploit the vulnerability remotely over a network.
- collector/mitre-cve
- source/MITRE
- collector/msrc-cve
- source/Microsoft
- agent/title
- agent/references
- agent/type
- agent/first-publish-date
- agent/software-canonical-lookup
- agent/softwarecombine
- collector/msrc
- collector/nvd-api
- source/NVD
- agent/author
- agent/weakness
- agent/last-modified-date
- agent/severity
- agent/source
- agent/description
- agent/tags
- agent/event
- vendor/microsoft
- canonical/microsoft windows server
- canonical/microsoft windows server 2012 r2
- canonical/windows 10
- version/windows 10/1607
- canonical/microsoft windows server 2025
- version/windows 10/21h2
- canonical/microsoft windows server 2008 r2
- canonical/microsoft windows server 2016
- version/windows 10/22h2
- canonical/windows 11
- version/windows 11/24h2
- canonical/microsoft windows server 2019
- version/windows 11/22h2
- canonical/microsoft windows server 2022 23h2
- version/windows 11/23h2
- version/windows 10/1809
- canonical/microsoft windows server 2022