Cyber Resilience

CVE-2025-21259

Medium

Published: 11 February 2025

Published
11 February 2025
Modified
28 February 2025
KEV Added
—
Patch
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CVSS Score v3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS Score 0.0100 77.4th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-21259 is a medium-severity User Interface (UI) Misrepresentation of Critical Information (CWE-451) vulnerability in Microsoft Outlook. Its CVSS base score is 5.3 (Medium).

Operationally, ranked in the top 22.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Microsoft Outlook Spoofing Vulnerability

CWE(s)
CWE-451NVD-CWE-noinfo

Related Threats

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

Affected Assets

microsoft
outlook
≤ 4.2501.1

Mitigating Controls

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

References