Memory corruption in Windows and Windows Server - CVE-2018-8639

Vulnerability identifier: #VU16465

CSH Severity: Low

CVSS v4.0: 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/E:A/U:Clear

CVE-ID: CVE-2018-8639

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: The vulnerability is being exploited in the wild

Vendor: Microsoft

Affected software:
Windows
Windows Server

The vulnerability allows a local user to gain elevated privileges on the target system.

The vulnerability exists due to a boundary error in Windows kernel-mode driver win32k.sys. A local user can use a specially crafted application to execute arbitrary code with SYSTEM privileges.

Install updates from vendor's website.

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8639