Memory corruption in Windows and Windows Server - CVE-2015-2546
Published: February 1, 2017 / Updated: November 20, 2020
Vulnerability identifier: #VU5577
CSH Severity: Medium
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:Green
CVE-ID: CVE-2015-2546
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
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The weakness exists due to boundary error in ATMFD.dll in Win32k.sys. A local attacker can execute a specially crafted program, trigger memory corruption and gain SYSTEM privileges.
Successful exploitation of the vulnerability may result in full control of the vulnerable system.
Note: the vulnerability was being actively exploited.
How to mitigate CVE-2015-2546
Install update from vendor's website.