Cyber Resilience

CVE-2022-21855

Critical

Published: 11 January 2022

Published
11 January 2022
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 9.0 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0153 81.7th percentile
Risk Priority 19 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-21855 is a critical-severity an unspecified weakness vulnerability in Microsoft Exchange Server. Its CVSS base score is 9.0 (Critical).

Operationally, ranked in the top 18.3% 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

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

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