VulnerabilityAnalyzed
CVE-2018-0802
Microsoft Office Memory Corruption Vulnerability
KEVHIGH 7.8EPSS 93.3%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 3 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 93.29% probability · 100th percentile
- CISA KEV
- Listed 3 November 2021 · due 3 May 2022 · used in ransomware campaigns
- Weakness
- CWE-787
- Affected
- microsoft/office · microsoft/office compatibility pack · microsoft/word
- Source
- secure@microsoft.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2018-0802
References
- http://www.securityfocus.com/bid/102347Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040153Broken Link, Third Party Advisory, VDB Entry
- https://0patch.blogspot.com/2018/01/the-bug-that-killed-equation-editor-how.htmlExploit, Third Party Advisory
- https://github.com/rxwx/CVE-2018-0802Exploit, Third Party Advisory
- https://github.com/zldww2011/CVE-2018-0802_POCThird Party Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0802Patch, Vendor Advisory
- https://research.checkpoint.com/another-office-equation-rce-vulnerability/Exploit
- http://www.securityfocus.com/bid/102347Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1040153Broken Link, Third Party Advisory, VDB Entry
- https://0patch.blogspot.com/2018/01/the-bug-that-killed-equation-editor-how.htmlExploit, Third Party Advisory
- https://github.com/rxwx/CVE-2018-0802Exploit, Third Party Advisory
- https://github.com/zldww2011/CVE-2018-0802_POCThird Party Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0802Patch, Vendor Advisory
- https://research.checkpoint.com/another-office-equation-rce-vulnerability/Exploit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0802US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.