Permissions, Privileges, and Access Controls in Microsoft products - CVE-2021-26442

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Main Vulnerability Database Vulnerabilities #VU57253

Permissions, Privileges, and Access Controls in Microsoft products - CVE-2021-26442

Published: October 12, 2021 / Updated: August 16, 2022


Vulnerability identifier: #VU57253
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-26442
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Microsoft Internet Information Services (IIS)

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 Windows HTTP.sys, which leads to security restrictions bypass and privilege escalation.


How to mitigate CVE-2021-26442

Install updates from vendor's website.

Sources