Product:
Windows Ancillary Function Driver for WinSock
Summary
Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. This vulnerability can lead to significant security risks if exploited. It is crucial for users to be aware of the potential impact of this issue.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.8 | CVE-2026-21236 |
Exploitation
To exploit this vulnerability, an attacker must have local access to the system and can leverage the buffer overflow to execute arbitrary code with elevated privileges. This can be achieved by sending specially crafted requests to the affected driver, allowing the attacker to gain control over the system.
Affected Products
- Windows Ancillary Function Driver for WinSock: Vulnerable to heap-based buffer overflow, allowing local privilege escalation.
Mitigation
To mitigate this vulnerability, users should apply the latest security updates provided by Microsoft. Regularly updating systems and monitoring for unusual activity can help reduce the risk of exploitation.