CVE-2021-40442
Microsoft Excel Remote Code Execution Vulnerability
7.8 High
Microsoft Excel Remote Code Execution Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
2.29%Up 1.4 points since Nov 10, 2021
What each source reports
CVE List Score used
Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
- Record
CVE-2021-40442- CVSS 3.1
- 7.8 High
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 - Updated
- 2026-11-02
EUVDEUVD-2021-27619
Microsoft Excel Remote Code Execution Vulnerability
- Record
EUVD-2021-27619- CVSS 3.1
- 7.8 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-w697-w7c7-c9pp
Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
- Record
GHSA-w697-w7c7-c9pp- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
Microsoft Excel Remote Code Execution Vulnerability
- Record
CVE-2021-40442- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
Affected products
- microsoft excel
- microsoft 365 apps
- microsoft 365 apps for enterprise
- microsoft excel 2013 service pack 1
- microsoft excel 2016
- microsoft office 2019
- microsoft office 2019 for mac
- microsoft office ltsc 2021
- microsoft office ltsc for mac 2021
- microsoft office online server
- microsoft office web apps server 2013 service pack 1
- microsoft sharepoint enterprise server 2013 service pack 1
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-40442 is a high vulnerability (CVSS 7.8) in Microsoft Excel, published November 10, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.29%, the 83rd percentile. No source names a fixed version.