# CVE-2018-0802: Microsoft Office Memory Corruption Vulnerability

> CVE-2018-0802: Microsoft Office Memory Corruption Vulnerability. CVSS 7.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2018-0802
Last updated: 2025-10-21T23:45:56Z

- Published: 2018-01-10 01:00 UTC · Updated: 2025-10-21 23:45 UTC · Assigner: microsoft
- CVSS: 7.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS: 93.3%, 100th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2021-11-03, federal due date 2022-05-03, ransomware use: Known

## Description

Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allow a remote code execution vulnerability due to the way objects are handled in memory, aka "Microsoft Office Memory Corruption Vulnerability". This CVE is unique from CVE-2018-0797 and CVE-2018-0812.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Microsoft Corporation: Equation Editor

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2018-0802)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2018-0802)
- [https://0patch.blogspot.com/2018/01/the-bug-that-killed-equation-editor-how.html](https://0patch.blogspot.com/2018/01/the-bug-that-killed-equation-editor-how.html)
- [https://github.com/rxwx/CVE-2018-0802](https://github.com/rxwx/CVE-2018-0802)
- [https://github.com/zldww2011/CVE-2018-0802\_POC](https://github.com/zldww2011/CVE-2018-0802_POC)
- [https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0802](https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0802)
- [https://research.checkpoint.com/another-office-equation-rce-vulnerability/](https://research.checkpoint.com/another-office-equation-rce-vulnerability/)
- [http://www.securityfocus.com/bid/102347](http://www.securityfocus.com/bid/102347)
- [http://www.securitytracker.com/id/1040153](http://www.securitytracker.com/id/1040153)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2018-0802 · Markdown: https://rewindex.com/cve/CVE-2018-0802.md · JSON: https://rewindex.com/api/v1/cves/CVE-2018-0802 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:44:14.278Z