CVE-2023-21676 Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability
Attackers can execute arbitrary code remotely via the Windows Lightweight Directory Access Protocol, affecting Windows clients and servers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-21676?
CVE-2023-21676 is a high-severity code injection vulnerability in Microsoft Windows 10 1809, published on 10 Jan 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability
Which versions are affected by CVE-2023-21676?
It affects 8 products.
Products include Microsoft Windows 10 1809, Microsoft Windows 10 20h2, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 21h2, Microsoft Windows 11 22h2 and 2 more.
How do I fix CVE-2023-21676?
No fix has been published for CVE-2023-21676 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2023-21676 being exploited?
There is no known exploitation of CVE-2023-21676 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1809
- CVE-2024-29988 Microsoft SmartScreen Prompt Security Feature Bypass
- CVE-2024-21412 Microsoft Windows Internet Shortcut Files Security Feature Bypass
- CVE-2025-62221 Microsoft Windows Use After Free
- CVE-2025-30400 Microsoft Windows DWM Core Library Use-After-Free
- CVE-2024-21338 Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control
Sources
Also known as GHSA-2g8f-fq6c-x5cq.