Vulnerability identifier: #VU54720
Vulnerability risk: High
CVSSv3.1: 8.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Windows
Operating systems & Components /
Operating system
Windows Server
Operating systems & Components /
Operating system
Vendor: Microsoft
Description
The vulnerability allows a local user to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code on the system with elevated privileges.
Note, the vulnerability is being actively exploited in the wild.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Windows: 10 - 10 S, 8.1 - 8.1 RT
Windows Server: 2012 R2 - 2019 2004
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33771
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.