Vulnerability in Microsoft Excel
CVE-2022-21840
Microsoft Office Remote Code Execution Vulnerability
EPSS: 0.095 (93.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Excel — versions 2013, 2016
- 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 2013 Service Pack 1 — versions 15.0.0
- Microsoft Office 2016 — versions 16.0.0
- Microsoft Office 2019 — versions 19.0.0
- Microsoft Office 2019 For Mac — versions 16.0.0
- Microsoft Office Ltsc 2021 — versions 16.0.1
- Microsoft Office Ltsc For Mac 2021 — versions 16.0.1
Public proof-of-concept exploits
References
- secure@microsoft.com (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-21840?
- CVE-2022-21840 is a high-severity vulnerability in Microsoft Excel. CVSS score: 8.8/10. Published 2022-01-11.
- How severe is CVE-2022-21840?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2022-21840 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.