Input validation error in Microsoft Office and Microsoft Excel - CVE-2021-42292
Published: November 9, 2021
Vulnerability identifier: #VU58058
CSH Severity: Critical
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2021-42292
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: Microsoft
Affected software:
Microsoft Office
Microsoft Excel
Microsoft Office
Microsoft Excel
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper input validation when processing Excel files. A remote attacker can create a specially crafted Excel file, trick the victim into opening it and execute arbitrary code on the system.
Note, the vulnerability is being exploited in the wild.
How to mitigate CVE-2021-42292
Install updates from vendor's website.