Cyber Resilience

CVE-2021-27078

Critical

Published: 03 March 2021

Published
03 March 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.2713 96.5th percentile
Risk Priority 34 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-27078 is a critical-severity an unspecified weakness vulnerability in Microsoft Exchange Server. Its CVSS base score is 9.1 (Critical).

Operationally, ranked in the top 3.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Microsoft Exchange Server Remote Code Execution Vulnerability

CWE(s)
NVD-CWE-noinfo

Related Threats

Threat-Actor AttributionAI

HAFNIUM (G0125)
Top CVEs Actively Exploited By People’s Republic of China State-Sponsored Cyber Actors | CISA

Affected Assets

microsoft
exchange server
2013, 2016, 2019

Mitigating Controls

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

References