Cyber Resilience

CVE-2023-21738

High

Published: 10 January 2023

Published
10 January 2023
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0328 87.5th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-21738 is a high-severity Heap-based Buffer Overflow (CWE-122) vulnerability in Microsoft 365 Apps. Its CVSS base score is 7.8 (High).

Operationally, ranked in the top 12.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Microsoft Office Visio Remote Code Execution Vulnerability

CWE(s)
CWE-122NVD-CWE-noinfo

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

microsoft
365 apps
all versions
microsoft
office
2019
microsoft
office long term servicing channel
2021

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References