VulnerabilityAnalyzed
CVE-2017-11826
Microsoft Office Remote Code Execution Vulnerability
KEVHIGH 7.8EPSS 81.3%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 24 March 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Microsoft Office 2010, SharePoint Enterprise Server 2010, SharePoint Server 2010, Web Applications, Office Web Apps Server 2010 and 2013, Word Viewer, Word 2007, 2010, 2013 and 2016, Word Automation Services, and Office Online Server allow remote code execution when the software fails to properly handle objects in memory.
- 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
- 81.29% probability · 100th percentile
- CISA KEV
- Listed 3 March 2022 · due 24 March 2022
- Weakness
- CWE-119
- Affected
- microsoft/office compatibility pack · microsoft/office online server · microsoft/office web apps server · microsoft/office word viewer · microsoft/sharepoint enterprise server · microsoft/sharepoint server · microsoft/word
- Source
- secure@microsoft.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2017-11826
References
- http://www.securityfocus.com/bid/101219Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039541Broken Link, Third Party Advisory, VDB Entry
- https://0patch.blogspot.com/2017/11/0patching-pretty-nasty-microsoft-word.htmlExploit
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11826Patch, Vendor Advisory
- https://securingtomorrow.mcafee.com/mcafee-labs/analyzing-microsoft-office-zero-day-exploit-cve-2017-11826-memory-corruption-vulnerability/Broken Link, Technical Description, Third Party Advisory
- https://www.tarlogic.com/en/blog/exploiting-word-cve-2017-11826/Exploit, Third Party Advisory
- http://www.securityfocus.com/bid/101219Broken Link, Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039541Broken Link, Third Party Advisory, VDB Entry
- https://0patch.blogspot.com/2017/11/0patching-pretty-nasty-microsoft-word.htmlExploit
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11826Patch, Vendor Advisory
- https://securingtomorrow.mcafee.com/mcafee-labs/analyzing-microsoft-office-zero-day-exploit-cve-2017-11826-memory-corruption-vulnerability/Broken Link, Technical Description, Third Party Advisory
- https://www.tarlogic.com/en/blog/exploiting-word-cve-2017-11826/Exploit, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11826US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.