OnlyFm252
Microsoft Exchange Server

CVE-2022-41040 — Microsoft Exchange Server Elevation of Privilege Vulnerability

Critical CVSS 8.8 EPSS 0.99945 ⚠️ Exploited in the wild 2022-09 archive

Executive Summary

None

Overview

8.8
CVSS HIGH
Critical
MS Severity
Exploited
MS Exploit Status
Exploitation Detected
MS Exploit Likelihood
Category Elevation of Privilege
Released Sep 13 2022
Last Updated Sep 13 2022
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.99945 — 0.99972 percentile
NVD CVSS 8.8 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
ATTACK VECTOR
Network
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.9

EPSS Score

0.99945
probability of exploitation in the next 30 days
0.99972 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

5 affected products
Product KB Article Severity Impact Restart Required
Microsoft Exchange Server 2013 Cumulative Update 23 5019758 (Security Update) Critical Elevation of Privilege Yes
Microsoft Exchange Server 2016 Cumulative Update 22 5019758 (Security Update) Critical Elevation of Privilege Yes
Microsoft Exchange Server 2016 Cumulative Update 23 5019758 (Security Update) Critical Elevation of Privilege Yes
Microsoft Exchange Server 2019 Cumulative Update 11 5019758 (Security Update) Critical Elevation of Privilege Yes
Microsoft Exchange Server 2019 Cumulative Update 12 5019758 (Security Update) Critical Elevation of Privilege Yes

Patches

1 patch
Article Type Restart
5019758 Security Update Yes

Known Exploits

On This Page