Cyber Resilience

CVE-2025-21357

Medium

Published: 14 January 2025

Published
14 January 2025
Modified
01 July 2025
KEV Added
—
Patch
—
CVSS Score v3.1 6.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0043 62.8th percentile
Risk Priority 14 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-21357 is a medium-severity Use of Uninitialized Resource (CWE-908) vulnerability in Microsoft Office Long Term Servicing Channel. Its CVSS base score is 6.7 (Medium).

Operationally, ranked in the top 37.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Microsoft Outlook Remote Code Execution Vulnerability

CWE(s)
CWE-908NVD-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, 2024
microsoft
outlook
2016

Mitigating Controls

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

References