NULL pointer dereference in Windows and Windows Server - CVE-2025-49686
Published: July 9, 2025
Vulnerability identifier: #VU112645
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-49686
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a NULL pointer dereference error in Windows TCP/IP Driver. A local user can pass specially crafted data to the application and gain elevated privileges on the target system.
How to mitigate CVE-2025-49686
Install update from vendor's website.