CVE-2017-11774
Published 2017-10-13 · Updated 2026-06-17 · Source secure@microsoft.com
Summary
CVE-2017-11774 is a high-severity (CVSS 7.8) vulnerability in Microsoft Office. CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 3, 2022. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.
All 390 known-exploited Microsoft vulnerabilities →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."
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA Known-Exploited Vulnerability
Product: Microsoft — Office
Name: Microsoft Office Outlook Security Feature Bypass Vulnerability
Date added: 2021-11-03 · Due: 2022-05-03
Required action: Apply updates per vendor instructions.
References
- http://www.securityfocus.com/bid/101098
- http://www.securitytracker.com/id/1039542
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11774
- https://sensepost.com/blog/2017/outlook-home-page-another-ruler-vector/
- http://www.securityfocus.com/bid/101098
- http://www.securitytracker.com/id/1039542
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11774
- https://sensepost.com/blog/2017/outlook-home-page-another-ruler-vector/