Privilege escalation in Microsoft Windows ExecutionContext Driver

1) NULL pointer dereference

EUVDB-ID: #VU109093

Risk: Low

CVSSv4.0: 4.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-29838

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local attacker to escalate privileges on the system.

The vulnerability exists due to a NULL pointer dereference error in Windows ExecutionContext Driver. A local attacker can pass specially crafted data to the application and gain elevated privileges on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows Server: 2012 Gold - 2025 10.0.26100.3775

Windows: 10 1607 10.0.14393.10 - 11 24H2 10.0.26100.3775

CPE2.3

• cpe:2.3:o:microsoft:windows_server:2012_Gold:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2012_R2:6.3.9600.21871:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2012_R2:6.3.9600.21924:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2012_R2:6.3.9600.21972:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2012_R2:6.3.9600.22023:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2012_R2:6.3.9600.22074:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2012_R2:6.3.9600.22134:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2012_R2:6.3.9600.22175:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2012_R2:6.3.9600.22221:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2012_R2:6.3.9600.22267:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows:10_1607:10.0.14393.10:*:*:*:*:*:*

External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29838

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.