CVE-2025-26663: Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability
First published: Tue Apr 08 2025(Updated: )
<p>Use after free in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to execute code over a network.</p>
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Windows 11 | =22H2 | |
| Windows 11 | =24H2 | |
| Microsoft Windows Server 2022 | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Windows 10 | =1607 | |
| Windows 10 | =1607 | |
| Microsoft Windows Server | ||
| Windows 10 | =21H2 | |
| Microsoft Windows Server | ||
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2016 | ||
| Windows 10 | =22H2 | |
| Windows 10 | =21H2 | |
| Windows 10 | =22H2 | |
| Microsoft Windows Server 2008 R2 | ||
| Microsoft Windows Server 2025 | ||
| Windows 10 | =21H2 | |
| Windows 11 | =23H2 | |
| Microsoft Windows Server 2016 | ||
| Microsoft Windows Server 2022 23H2 | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server | ||
| Microsoft Windows Server 2008 R2 | ||
| Windows 10 | =1809 | |
| Microsoft Windows Server 2019 | ||
| Microsoft Windows Server 2012 R2 | ||
| Microsoft Windows Server 2012 R2 | ||
| Windows 10 | =22H2 | |
| Windows 11 | =22H2 | |
| Microsoft Windows Server 2019 | ||
| Windows 11 | =24H2 | |
| Windows 10 | =1809 | |
| Microsoft Windows Server 2022 | ||
| 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
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2025-26663?
CVE-2025-26663 is considered a critical vulnerability that can allow unauthorized code execution over a network.
How do I fix CVE-2025-26663?
To fix CVE-2025-26663, apply the recommended patches provided by Microsoft for your affected Windows version.
Which versions of Windows are affected by CVE-2025-26663?
CVE-2025-26663 affects various versions including Windows 10, Windows 11, and multiple Windows Server editions.
What are the risks associated with CVE-2025-26663?
The risks include potential unauthorized access, data breaches, and remote code execution capabilities for attackers.
Is there a workaround for CVE-2025-26663 until a patch is applied?
Currently, the best practice is to apply the patch as soon as it is available; no specific workaround is recommended.
- agent/title
- agent/type
- agent/first-publish-date
- collector/msrc-cve
- source/Microsoft
- agent/software-canonical-lookup
- agent/author
- agent/description
- collector/the-register
- source/The Register
- alias/CVE-2025-29824
- alias/CVE-2025-29809
- alias/CVE-2025-26663
- alias/CVE-2025-26670
- alias/CVE-2025-27480
- alias/CVE-2025-27482
- alias/CVE-2024-21969
- alias/CVE-2024-0179
- alias/CVE-2024-21925
- alias/CVE-2024-56161
- alias/CVE-2024-36347
- alias/CVE-2023-4969
- alias/CVE-2025-0014
- alias/CVE-2024-36337
- alias/CVE-2024-36328
- alias/CVE-2024-36336
- agent/references
- agent/source
- agent/severity
- agent/event
- agent/trending
- agent/tags
- collector/nvd-api
- source/NVD
- collector/msrc
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/weakness
- agent/softwarecombine
- agent/news-ai
- exploited/true
- vendor/microsoft
- canonical/windows 11
- version/windows 11/22h2
- version/windows 11/24h2
- canonical/microsoft windows server 2022
- canonical/microsoft windows server 2025
- canonical/microsoft windows server
- canonical/windows 10
- version/windows 10/1607
- version/windows 10/21h2
- version/windows 11/23h2
- canonical/microsoft windows server 2016
- version/windows 10/22h2
- canonical/microsoft windows server 2008 r2
- canonical/microsoft windows server 2022 23h2
- version/windows 10/1809
- canonical/microsoft windows server 2019
- canonical/microsoft windows server 2012 r2