CVE-2020-17123 HIGH

CVE-2020-17123: Microsoft Excel Remote Code Execution Vulnerability

Vendor Microsoft
Product Microsoft 365 Apps for Enterprise
Published December 9, 2020
Last update June 9, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Microsoft Excel Remote Code Execution Vulnerability

Key dates

02Disclosure timeline

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