CVE-2018-0798

Name: CVE-2018-0798
Creator: NVD / NIST
Published: 2018-01-10T01:29:00.713+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10Actively ExploitedEPSS 95.12%

Last modified Jun 17, 2026

CVE-2018-0798 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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".. CISA has confirmed active exploitation in the wild. EPSS estimates a 95.12% chance of exploitation in the next 30 days.

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".

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

95.12%

99.9th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by May 3, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Microsoft	Office	2007	Sp3
Microsoft	Office	2010	Sp2
Microsoft	Office	2013	Sp1
Microsoft	Office	2016	—
Microsoft	Office Compatibility Pack	All versions	Sp3
Microsoft	Word	2007	Sp3
Microsoft	Word	2010	Sp2
Microsoft	Word	2013	Sp1
Microsoft	Word	2016	—

References

http://www.securityfocus.com/bid/102370Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040153Broken Link, Third Party Advisory, VDB Entry
https://0patch.blogspot.com/2018/01/bringing-abandoned-equation-editor-back.htmlThird Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0798Patch, Vendor Advisory
http://www.securityfocus.com/bid/102370Broken Link, Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040153Broken Link, Third Party Advisory, VDB Entry
https://0patch.blogspot.com/2018/01/bringing-abandoned-equation-editor-back.htmlThird Party Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0798Patch, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0798US Government Resource

Timeline

Published: Jan 10, 2018
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2018-0798?

How severe is CVE-2018-0798?

CVE-2018-0798 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 95.12% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2018-0798?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-0798?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST