CVE-2020-17143 HIGH

CVE-2020-17143: Microsoft Exchange Server Information Disclosure Vulnerability

Vendor Microsoft
Product Microsoft Exchange Server 2013 Cumulative Update 23
Published December 9, 2020
Last update June 9, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

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

What the vulnerability does

01Description

Microsoft Exchange Server Information Disclosure Vulnerability

Key dates

02Disclosure timeline

December 9, 2020 CVE published
June 9, 2026 Record updated