Main Vulnerability Database Vulnerabilities #VU52164

Buffer overflow in Microsoft Windows and Windows Server - CVE-2021-28310

Published: April 13, 2021 / Updated: August 6, 2021

Vulnerability identifier: #VU52164

CSH Severity: High

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-28310

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: The vulnerability is being exploited in the wild

Vulnerability details

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

The vulnerability exists due to a boundary error within win32k.sys driver in Microsoft Windows. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code with elevated privileges.

Note, the vulnerability is being actively exploited in the wild.

Affected software

Microsoft Windows
Windows Server

How to mitigate CVE-2021-28310

Install updates from vendor's website.

External References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28310

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