CVE-2021-27055: Microsoft Visio Security Feature Bypass Vulnerability
Overview
- Severity
- High (CVSS 7)
- CVSS Vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Category
- Security Feature Bypass
- Exploit Status
- Not Exploited
- Exploitation Likelihood
- Less Likely
- Patch Tuesday
- 2021-Mar
- Released
- 2021-03-09
- EPSS Score
- 1.16% (percentile: 78.6%)
FAQ
Is the Preview Pane an attack vector for this vulnerability?
No, the Preview Pane is not an attack vector.
What is the attack vector for this vulnerability?
Initially an Administrator would need to set a Group Policy in a specific way. Then, an attacker would then need to modify a macro-enabled template that ships with Excel. Then the attacker needs to convince a target to run that malicious file on a system affected by that Policy.
Detection & Weaponization (1 sources)
Maturity: Detection
- YARA rules: SIGNATURE_BASE_EXPL_LOG_CVE_2021_27055_Exchange_Forensic_Artefacts
Affected Products (10)
Microsoft Office
- Microsoft Visio 2013 Service Pack 1 (32-bit editions)
- Microsoft Visio 2013 Service Pack 1 (64-bit editions)
- Microsoft Visio 2016 (32-bit edition)
- Microsoft Visio 2016 (64-bit edition)
- Microsoft Visio 2010 Service Pack 2 (32-bit editions)
- Microsoft Visio 2010 Service Pack 2 (64-bit editions)
- Microsoft Office 2019 for 32-bit editions
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft Office 2019 for 64-bit editions
Security Updates (6)
Acknowledgments
Luke Papandrea, Microsoft Corporation
Revision History
- 2021-03-09: Information published.