Buffer overflow in Microsoft Windows and Windows Server - CVE-2018-8120
Published: May 8, 2018 / Updated: June 17, 2021
Vulnerability identifier: #VU12457
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-2018-8120
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 boundary error in win32k.sys driver. A local user can execute arbitrary code with SYSTEM privileges.
Note: this vulnerability is being actively exploited in limited targeted attacks.Affected software
Microsoft Windows
Windows Server
Windows Server
How to mitigate CVE-2018-8120
Install updates from vendor's website.
Links to Public Exploits and PoC-codes
- Exploit #6107 - Microsoft Windows - SetImeInfoEx Win32k NULL Pointer Dereference (Metasploit) (June 17, 2021)
- Exploit #2243 - CVE-2018-8120 (CVE-2018-8120 Windows LPE exploit) (March 31, 2020)
- Exploit #193 - CVE-2018-8120 (CVE-2018-8120 Exploit for Win2003 Win2008 WinXP Win7 ) (March 18, 2020)
- Exploit #194 - CVE-2018-8120 (CVE-2018-8120 Windows LPE exploit) (March 18, 2020)
- Exploit #1519 - Windows SetImeInfoEx Win32k NULL Pointer Dereference (March 18, 2020)