CVE-2020-1226: microsoft 365_apps Use After Free

Vulnerability summary

CVE-2020-1226 is a high (CVSS 9.3) Use After Free vulnerability in microsoft 365_apps. EPSS estimates a 17.08% chance of exploitation in the next 30 days, higher than 97% of scored vulnerabilities.

Timeline

1. 09-06-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory, aka 'Microsoft Excel Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-1225.

• CWE-416Use After FreeThe 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.