Vulnerability identifier: #VU56513

Vulnerability risk: High

CVSSv3.1:

CVE-ID: CVE-2021-38660

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Excel
Client/Desktop applications / Office applications

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in Microsoft Office Graphics. A remote attacker can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Excel:

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CPE

• cpe:2.3:a:microsoft:microsoft_excel:2013 RT Service Pack 1:*:*:*:*:microsoft_office:*:*

External links
http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38660

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?