Main Vulnerability Database Vulnerabilities #VU53072

Out-of-bounds read in Microsoft products - CVE-2021-31178

Published: May 11, 2021 / Updated: June 22, 2021

Vulnerability identifier: #VU53072

CSH Severity: Medium

CVSS v4 BT: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2021-31178

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the Microsoft Office. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Affected software

Microsoft Office
Microsoft Excel
Microsoft Office Web Apps Server
Office Online Server

How to mitigate CVE-2021-31178

Install updates from vendor's website.

External References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31178

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