CVE-2022-21978

HIGH

Microsoft Exchange Server - Privilege Escalation

Title source: llm

Microsoft Exchange Server Elevation of Privilege Vulnerability

Core 2

Core References

Vendor Advisory vendor-advisory

Patch, Vendor Advisory

CVSS v3 8.2

EPSS 0.0084

EPSS Percentile 54.1%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Status published

Products (3)

microsoft/exchange_server 2013 cumulative_update_23

microsoft/exchange_server 2016 cumulative_update_22 (2 CPE variants)

microsoft/exchange_server 2019 cumulative_update_11 (2 CPE variants)

Published May 10, 2022

Tracked Since Feb 18, 2026