SARA / Free Tools / CVE / CVE-2023-21737

CVE-2023-21737 — Microsoft Office Visio Remote Code Execution Vulnerability

Microsoft Office Visio Remote Code Execution Vulnerability

CVSS

7.8 HIGH

EPSS

3.28% (top 12.90%)

CWE

CWE-122

Published

2023-01-10T00:00:00.000Z

Last modified

2025-02-28T21:14:56.205Z

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

01What is this vulnerability?

Microsoft Office Visio Remote Code Execution Vulnerability

Vendor	Product	Versions
Microsoft	Microsoft Office 2019	19.0.0
Microsoft	Microsoft 365 Apps for Enterprise	16.0.1
Microsoft	Microsoft Office LTSC 2021	16.0.1
Microsoft	Microsoft Visio 2013 Service Pack 1	15.0.1
Microsoft	Microsoft Visio 2013 Service Pack 1	15.0.1
Microsoft	Microsoft Visio 2016	16.0.1

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

msrc.microsoft.com — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21737

Want this in your SOAR or SIEM?
SARA's API returns EPSS, CVSS, KEV, and an analyst-grade summary in one call.