CVE-2022-21855

Published: Jan 11, 2022

Modified: Jan 2, 2025

PUBLISHED

CVSS v3.1

9.0

CRITICAL

Microsoft Exchange Server Remote Code Execution Vulnerability

Vendor	Product	Versions
Microsoft	Microsoft Exchange Server 2013 Cumulative Update 23	affected `15.00.0 - < 15.00.1497.028`
Microsoft	Microsoft Exchange Server 2016 Cumulative Update 21	affected `15.01.0 - < 15.01.2308.021`
Microsoft	Microsoft Exchange Server 2019 Cumulative Update 10	affected `15.02.0 - < 15.02.0922.020`
Microsoft	Microsoft Exchange Server 2016 Cumulative Update 22	affected `15.0.0 - < 15.01.2375.018`
Microsoft	Microsoft Exchange Server 2019 Cumulative Update 11	affected `15.02.0 - < 15.02.0986.015`

CVSS v3.1 Vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

vendor-advisory

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.