The vulnerability was reported by FireEye researcher Wang Yu.
Vulnerable component: Windows
CVSSv3 score: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
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.
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