#VU112674 Heap-based buffer overflow in Windows and Windows Server - CVE-2025-47981

Vulnerability identifier: #VU112674

Vulnerability risk: High

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

CVE-ID: CVE-2025-47981

CWE-ID: CWE-122

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Windows
Windows Server
Windows
Windows
Windows
Windows
Windows
Windows
Windows
Windows
Windows Server
Windows Server
Windows Server
Windows Server
Windows Server
Windows Server
Windows Server
Windows Server
Windows Server

Software vendor:
Microsoft

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in SPNEGO Extended Negotiation (NEGOEX) Security Mechanism. A remote attacker can send a specially crafted message to the server, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Install updates from vendor's website.

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47981