Vulnerability in Microsoft 365_apps
CVE-2021-43256
Microsoft Excel Remote Code Execution Vulnerability
EPSS: 0.009 (76.8th 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.
Affected products
- Microsoft 365_apps
- Microsoft Excel — versions 2013, 2016
- Microsoft Excel_rt — versions 2013
- 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 Ltsc 2021 — versions 16.0.1
- Microsoft Office Web Apps Server 2013 Service Pack 1 — versions 15.0.1
- Microsoft Office — versions 2019
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-43256?
- CVE-2021-43256 is a high-severity vulnerability in Microsoft 365_apps. CVSS score: 7.8/10. Published 2021-12-15.
- How severe is CVE-2021-43256?
- High severity. CVSS v3 base score is 7.8 out of 10.