Input validation error in Microsoft Windows and Microsoft Internet Explorer - CVE-2021-27085
Published: March 9, 2021 / Updated: May 19, 2021
Vulnerability identifier: #VU51356
CSH Severity: Critical
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-27085
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to insufficient validation of user-supplied input in Internet Explorer. A remote attacker can trick the victim to visit a specially crafted webpage and execute arbitrary code on the target system.
Note, the vulnerability is being actively exploited in the wild.
Affected software
Microsoft Windows
Microsoft Internet Explorer
Microsoft Internet Explorer
How to mitigate CVE-2021-27085
Install updates from vendor's website.