CVE Vulnerabilities

CVE-2021-31175

Use After Free

Published: May 11, 2021 | Modified: Nov 21, 2024
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

Microsoft Office Remote Code Execution Vulnerability

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
365_apps Microsoft - (including) - (including)
Excel Microsoft 2013-sp1 (including) 2013-sp1 (including)
Excel Microsoft 2016 (including) 2016 (including)
Office Microsoft 2013-sp1 (including) 2013-sp1 (including)
Office Microsoft 2016 (including) 2016 (including)
Office Microsoft 2019 (including) 2019 (including)
Office_online_server Microsoft - (including) - (including)
Office_web_apps_server Microsoft 2013-sp1 (including) 2013-sp1 (including)

Potential Mitigations

References