CVE-2021-34469: Microsoft Office Security Feature Bypass Vulnerability
Overview
- Severity
- High (CVSS 8.2)
- CVSS Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C
- Category
- Security Feature Bypass
- Exploit Status
- Not Exploited
- Exploitation Likelihood
- Less Likely
- Patch Tuesday
- 2021-Jul
- Released
- 2021-07-13
- EPSS Score
- 0.83% (percentile: 74.6%)
FAQ
Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.
According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file that is designed to exploit the vulnerability. However, an attacker would have no way to force the user to visit the website. Instead, an attacker would have to convince the user to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince the user to open the specially crafted file.
Affected Products (9)
Microsoft Office
- Microsoft Office 2019 for 32-bit editions
- Microsoft Office 2019 for 64-bit editions
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft Office 2016 (32-bit edition)
- Microsoft Office 2016 (64-bit edition)
- Microsoft Office 2013 RT Service Pack 1
- Microsoft Office 2013 Service Pack 1 (32-bit editions)
- Microsoft Office 2013 Service Pack 1 (64-bit editions)
Security Updates (4)
Acknowledgments
Ben Faull of Microsoft Corporation
Revision History
- 2021-07-13: Information published.