CVE-2018-0802
High 7.8 Exploited in the wild (KEV) Used in ransomware campaigns
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft Office Memory Corruption Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
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.
Metrics
- CVSS 3.1
-
7.8 (HIGH)
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 93% (percentile: 100) as of 1 November 2026
- CWE
- CWE-787
Affected products
microsoft: office; microsoft: office compatibility pack; microsoft: word
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0802 PatchVendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0802 PatchVendor Advisory
- https://0patch.blogspot.com/2018/01/the-bug-that-killed-equation-editor-how.html ExploitThird Party Advisory
- https://github.com/rxwx/CVE-2018-0802 ExploitThird Party Advisory
- https://research.checkpoint.com/another-office-equation-rce-vulnerability/ Exploit
- https://0patch.blogspot.com/2018/01/the-bug-that-killed-equation-editor-how.html ExploitThird Party Advisory
- https://github.com/rxwx/CVE-2018-0802 ExploitThird Party Advisory
- https://research.checkpoint.com/another-office-equation-rce-vulnerability/ Exploit
- http://www.securityfocus.com/bid/102347 Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040153 Broken LinkThird Party AdvisoryVDB Entry