CVE-2021-27065
high
Microsoft
⚠️ CISA KEV — Exploited in the Wild
CVSS v3 Base Score
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score
99.9%
Exploitation probability in 30 days
Top 0% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Published: March 3, 2021 (2013 days ago)
Last Modified: August 19, 2026
Vendor: Microsoft
Source: NVD
⚠️ CISA Known Exploited Vulnerability
Added to KEV: 2021-11-03
Remediation Due: 2022-05-03 (⚠ 1587d overdue)
Ransomware Campaign: Known
Vulnerability Report
Generated by CyberWatcher
Description
Microsoft Exchange Server Remote Code Execution Vulnerability
CWE
CWE-22Affected Products
microsoft exchange server