CVE-2017-11774
KEVMicrosoft Office Outlook Security Feature Bypass Vulnerability
Description
Microsoft Office Outlook contains a security feature bypass vulnerability due to improperly handling objects in memory. Successful exploitation allows an attacker to execute commands.
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."
CVSS 3.1 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HPublishedOct 13, 2017
Last modifiedJun 17, 2026
Added to KEVNov 3, 2021
Remediation dueMay 3, 2022
References
- securityfocus.com/bid/101098Broken LinkThird Party Advisory
- securitytracker.com/id/1039542Broken LinkThird Party Advisory
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11774PatchVendor Advisory
- sensepost.com/blog/2017/outlook-home-page-another-ruler-vector/Exploit
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-11774US Government Resource
0 recent articles mention this CVE
75
Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1638 days
- CVSS
- 7.8 HIGH
- EPSS (30-day exploit probability)
- 59.6% · top 1% of all CVEs
- Weakness
- CWE-119
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.