Vulnerability in Microsoft 365 Apps For Enterprise
CVE-2020-17123
Microsoft Excel Remote Code Execution Vulnerability
EPSS: 0.123 (94.0th 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 2010 Service Pack 2 — versions 13.0.0.0
- 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 Web Apps 2013 Service Pack 1 — versions 15.0.0.0
- Microsoft Office Online Server — versions 1.0.0
Public proof-of-concept exploits
References
- Microsoft Excel Remote Code Execution Vulnerability (vendor-advisory)
Frequently asked questions
- What is CVE-2020-17123?
- CVE-2020-17123 is a high-severity vulnerability in Microsoft 365 Apps For Enterprise. CVSS score: 7.8/10. Published 2020-12-09.
- How severe is CVE-2020-17123?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-17123 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.