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ID:11948 - Exploit for Heap-based buffer overflow in Windows and Windows Server - CVE-2025-21333
ID:11948 - Exploit for Heap-based buffer overflow in Windows and Windows Server - CVE-2025-21333
Published: September 12, 2025
Vulnerability identifier: #VU102617
Vulnerability risk: High
CVE-ID: CVE-2025-21333
CWE-ID: CWE-122
Exploitation vector: Local access
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Link to public exploit:
Vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in Windows Hyper-V NT Kernel Integration VSP component. A local user can trigger a heap-based buffer overflow and execute arbitrary code with SYSTEM privileges.
Note, the vulnerability is being actively exploited in the wild.Remediation
Install updates from vendor's website.