CVE-2018-0802
Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allow a remote code…
- Published
- Updated
- Reserved
- Assigned by
- microsoft
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft Office Memory Corruption Vulnerability.
- Added
- 3 Nov 2021
- Fix due (US federal)
- 3 May 2022
- Used by ransomware
- Known
Apply updates per vendor instructions.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By microsoft
- 40 days later
· 40 days later
Published
- 4 years later
· 4 years later
Added to CISA KEV
Known exploited, also by ransomware
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 93.3% · top 0.2% of all CVEs (8 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Weakness
- Remote Code Execution
- CWE-787 Out-of-bounds Write (opens in a new tab)All about CWE-787 and its CVEs
Affected products
Microsoft Corporation · Equation Editor
- affected Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016
References (8)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0802 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/rxwx/CVE-2018-0802 (opens in a new tab)x_refsource_MISCx_transferred
- 1040153 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://0patch.blogspot.com/2018/01/the-bug-that-killed-equation-editor-how.html (opens in a new tab)x_refsource_MISCx_transferred
- 102347 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://github.com/zldww2011/CVE-2018-0802_POC (opens in a new tab)x_refsource_MISCx_transferred
- https://research.checkpoint.com/another-office-equation-rce-vulnerability/ (opens in a new tab)x_refsource_MISCx_transferred
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0802 (opens in a new tab)government-resource
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-0802)Record last updated .