CVE-2021-40485 json
Microsoft Excel Remote Code Execution Vulnerability
published 2021-10-13 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-27662
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.7%
- EPSS 2.7% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
Microsoft Excel Remote Code Execution Vulnerability
Patch / fix
- Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.5389.1000
- Microsoft Microsoft Office 2019 for Mac 16.54.21101001
- Microsoft Microsoft Office Online Server 16.0.10379.20000
- Microsoft Microsoft Office LTSC for Mac 2021 16.54.21101001
- Microsoft Microsoft Excel 2016 16.0.5227.1000
- Microsoft Microsoft Excel 2013 Service Pack 1 15.0.5389.1000
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 20 mo ago
Exploit prediction
2.68% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.8 | 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 |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1
- Microsoft Microsoft Office 2019
- Microsoft Microsoft Office 2019 for Mac
- Microsoft Microsoft Office Online Server
- Microsoft Microsoft 365 Apps for Enterprise
- Microsoft Microsoft Office LTSC for Mac 2021
- Microsoft Microsoft Office LTSC 2021
- Microsoft Microsoft Excel 2016
- Microsoft Microsoft Excel 2013 Service Pack 1
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
portal.msrc.microsoft.com
/en-US/security-guidance/advisory/CVE-2021-40485
patch, vendor-advisory
Sources
- CVE List CVE-2021-40485
- NVD CVE-2021-40485
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.