CVE-2018-0798
Published 2018-01-10 · Updated 2026-06-17 · Source secure@microsoft.com
Summary
CVE-2018-0798 is a high-severity (CVSS 8.8) vulnerability in Microsoft Office. CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 3, 2022. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.
All 390 known-exploited Microsoft vulnerabilities →Description
Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allows a remote code execution vulnerability due to the way objects are handled in memory, aka "Microsoft Office Memory Corruption Vulnerability".
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Microsoft — Office
Name: Microsoft Office Memory Corruption Vulnerability
Date added: 2021-11-03 · Due: 2022-05-03
Required action: Apply updates per vendor instructions.
References
- http://www.securityfocus.com/bid/102370
- http://www.securitytracker.com/id/1040153
- https://0patch.blogspot.com/2018/01/bringing-abandoned-equation-editor-back.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0798
- http://www.securityfocus.com/bid/102370
- http://www.securitytracker.com/id/1040153
- https://0patch.blogspot.com/2018/01/bringing-abandoned-equation-editor-back.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0798