CVE-2017-11774
High 7.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft Office Outlook Security Feature Bypass Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
Microsoft Outlook 2010 SP2, Outlook 2013 SP1 and RT SP1, and Outlook 2016 allow an attacker to execute arbitrary commands, due to how Microsoft Office handles objects in memory, aka "Microsoft Outlook Security Feature Bypass Vulnerability."
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
- 60% (percentile: 99) as of 1 November 2026
- CWE
- CWE-119
Affected products
microsoft: outlook
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-117… PatchVendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-117… PatchVendor Advisory
- https://sensepost.com/blog/2017/outlook-home-page-another-ruler-vector/ Exploit
- https://sensepost.com/blog/2017/outlook-home-page-another-ruler-vector/ Exploit
- http://www.securityfocus.com/bid/101098 Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039542 Broken LinkThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/101098 Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1039542 Broken LinkThird Party AdvisoryVDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017… US Government Resource