Vulnerability in Microsoft 365 Apps For Enterprise
CVE-2021-31177
Microsoft Office Remote Code Execution Vulnerability
EPSS: 0.140 (94.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C.
Affected products
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Excel 2013 Service Pack 1 — versions 15.0.0.0
- Microsoft Excel 2016 — versions 16.0.0.0
- Microsoft Office 2019 — versions 19.0.0
- Microsoft Office 2019 For Mac — versions 16.0.0
- Microsoft Office Online Server — versions 16.0.1
- Microsoft Office Web Apps Server 2013 Service Pack 1 — versions 15.0.1
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31177 (x_refsource_MISC)
- www.zerodayinitiative.com/advisories/ZDI-21-576/ (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-31177?
- CVE-2021-31177 is a high-severity vulnerability in Microsoft 365 Apps For Enterprise. CVSS score: 7.8/10. Published 2021-05-11.
- How severe is CVE-2021-31177?
- High severity. CVSS v3 base score is 7.8 out of 10.