#VU57261 Use-after-free in Microsoft products - CVE-2021-40486
Published: October 12, 2021 / Updated: October 14, 2021
Vulnerability identifier: #VU57261
Vulnerability risk: High
CVSSv4.0: 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:U/U:Amber
CVE-ID: CVE-2021-40486
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Microsoft SharePoint Server
Microsoft Office Web Apps Server
Microsoft Office
Microsoft Word
Office Online Server
Microsoft SharePoint Server
Microsoft Office Web Apps Server
Microsoft Office
Microsoft Word
Office Online Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing DOC files in Microsoft Word. A remote attacker can trick the victim to open a specially crafted document, trigger a use-after-free error and execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Install updates from vendor's website.