NULL pointer dereference in Microsoft Windows and Windows Server - CVE-2024-49121

Vulnerability identifier: #VU101412

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2024-49121

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in Windows Lightweight Directory Access Protocol (LDAP). A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Microsoft Windows
Windows Server

Install updates from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.5247, 10 22H2 10.0.19045.5247, 10 1507 10.0.10240.20857, 10 1607 10.0.14393.7606, 10 1809 10.0.17763.6659, 11 22H2 10.0.22621.4602, 11 23H2 10.0.22631.4602
Windows Server - addressed in versions 2008 R2 6.1.7601.27467, 2008 6.0.6003.23016, 2012 R2 6.3.9600.22318, 2012 6.2.9200.25222, 2016 10.0.14393.7606, 2022 23H2 10.0.25398.1308, 2022 10.0.20348.2908, 2022 10.0.20348.2966, 2025 10.0.26100.2528, 2025 10.0.26100.2605

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-49121

• Multiple vulnerabilities in Microsoft Windows Lightweight Directory Access Protocol (LDAP)