Untrusted Pointer Dereference in Windows and Windows Server - CVE-2021-34516

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Main Vulnerability Database Vulnerabilities #VU54798

Untrusted Pointer Dereference in Windows and Windows Server - CVE-2021-34516

Published: July 13, 2021 / Updated: July 29, 2021


Vulnerability identifier: #VU54798
CSH Severity: Low
CVSSv4.0: 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-2021-34516
CWE-ID: CWE-822
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Windows
Windows Server
Software vendor:
Microsoft

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to untrusted pointer dereference in DrvTransparentBltInternal() within the Microsoft Windows Canonical Display Driver cdd.dll. A local user can run a specially crafted program to execute arbitrary code with SYSTEM privileges.


Remediation

Install updates from vendor's website.

External links