Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.

Are the updates for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems currently available?
Yes. As of April 9, 2025, the security update (5055547) for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems are available. Customers running Windows 10 should ensure the update is installed to be protected from this vulnerability.

How could an attacker exploit this vulnerability?
An unauthenticated attacker could sequentially send specially crafted requests to a vulnerable LDAP server. Successful exploitation could result in a use after free which could be leveraged to achieve remote code execution.

Security updates
10.0.17763.7136 — https://support.microsoft.com/help/5055519
10.0.20348.3453 — https://support.microsoft.com/help/5055526
10.0.19044.5737 — https://support.microsoft.com/help/5055518
10.0.22621.5189 — https://support.microsoft.com/help/5055528
10.0.26100.3775 — https://support.microsoft.com/help/5055523
10.0.25398.1551 — https://support.microsoft.com/help/5055527
10.0.10240.20978 — https://support.microsoft.com/help/5055547
10.0.14393.7969 — https://support.microsoft.com/help/5055521
6.0.6003.23220 — https://support.microsoft.com/help/5055609
6.0.6003.23220 — https://support.microsoft.com/help/5055596
6.1.7601.27670 — https://support.microsoft.com/help/5055561
6.1.7601.27670 — https://support.microsoft.com/help/5055570
6.2.9200.25423 — https://support.microsoft.com/help/5055581
6.3.9600.22523 — https://support.microsoft.com/help/5055557