#VU62095 Use-after-free in Microsoft products - CVE-2022-26901

Vulnerability identifier: #VU62095

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-2022-26901

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Microsoft Office Web Apps Server
Microsoft SharePoint Foundation
Microsoft SharePoint Server Subscription Edition
Microsoft SharePoint Enterprise Server
Office Online Server
Microsoft Office LTSC
Microsoft Office
Microsoft Excel
Microsoft 365 Apps for Enterprise

Software vendor:
Microsoft

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when parsing Excel files. A remote attacker can trick the victim to open a specially crafted Excel file, 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.

Install updates from vendor's website.

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-26901
• https://www.zerodayinitiative.com/advisories/ZDI-22-809/