Permissions, Privileges, and Access Controls in Windows and Windows Server - CVE-2021-43240
Published: December 14, 2021
Vulnerability identifier: #VU58939
CSH Severity: Low
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:U/U:Clear
CVE-ID: CVE-2021-43240
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions in NTFS Set Short Name, which leads to security restrictions bypass and privilege escalation.
How to mitigate CVE-2021-43240
Install updates from vendor's website.