Untrusted Pointer Dereference in Microsoft Windows and Windows Server - CVE-2021-27077

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Main Vulnerability Database Vulnerabilities #VU51284

Untrusted Pointer Dereference in Microsoft Windows and Windows Server - CVE-2021-27077

Published: March 9, 2021 / Updated: April 29, 2021


Vulnerability identifier: #VU51284
CSH Severity: Low
CVSS v4: 7.3 [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]
CVE-ID: CVE-2021-27077
CWE-ID: CWE-822
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

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

The vulnerability exists due to untrusted pointer dereference in multiple functions within win32kfull.sys driver. A local user can run a specially crafted program to trigger untrusted pointer dereference and execute arbitrary code with SYSTEM privileges.


Affected software

Microsoft Windows
Windows Server
Solutions Enabler Virtual Appliance
Solutions Enabler
Unisphere for PowerMax Virtual Appliance
Unisphere for PowerMax

How to mitigate CVE-2021-27077

Install updates from vendor's website.

Solutions Enabler Virtual Appliance - addressed in versions 9.1.0.17, 9.2.2.0
Solutions Enabler - addressed in versions 9.1.0.17, 9.2.2.0
Unisphere for PowerMax Virtual Appliance - addressed in versions 9.1.0.28, 9.2.2.2
Unisphere for PowerMax - addressed in versions 9.1.0.28, 9.2.2.2

External References

Related Security Bulletins