CVE-2021-42321

Microsoft Exchange Server Remote Code Execution Vulnerability

Published Nov 10, 2021 CVSS 3.1 · 8.8 High EPSS 91.7% KEV · Listed
Description
Microsoft Exchange Server Remote Code Execution Vulnerability

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_10:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_11:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_21:*:*:*:*:*:*
cpe:2.3:a:microsoft:exchange_server:*:cumulative_update_22:*:*:*:*:*:*
References
Type Values Removed Values Added
Metrics kev

{'dateAdded': '2021-11-17'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Aug 19, 2026, 4:27 PM
Reserved
Oct 12, 2021, 12:00 AM
Status
Analyzed
Published
Nov 10, 2021, 1:19 AM
Modified
Aug 19, 2026, 7:23 PM