Vulnerability identifier: #VU54828
Vulnerability risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-254
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 bypass authentication process.
The vulnerability exists due to security feature bypass issue in Windows Secure Kernel Mode. A local administrator can gain elevated privileges on the target system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Windows: 10 1809 10.0.17763.1, 10 1909 10.0.18363.476, 10 2004 10.0.19041.264, 10 20H2 10.0.19042.572, 10 21H1 10.0.19043.985, 10 1803 10.0.17134.48, 10 1709 10.0.16299.19, 10 1703 10.0.15063.138, 10 1607 10.0.14393.10, 10 1511 10.0.10586.3
Windows Server: 2019 10.0.17763.1 - 2019 2004
External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33744
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?
No. We are not aware of malware exploiting this vulnerability.