Vulnerability · Published Jun 8, 2021 · Assigned by microsoft
CVE-2021-31939Microsoft Excel Remote Code Execution Vulnerability
High 7.8
In plain English
A high-severity security flaw in Microsoft 365 Apps for Enterprise from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 13.3% (higher than 96% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)13.3%top 3.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Microsoft Excel Remote Code Execution Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Office Online Server | https://aka.ms/OfficeSecurityReleases – before 16.0.10375.20000 |
| Microsoft | Microsoft Office 2019 | 19.0.0 – before https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 – before https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Excel 2016 | 16.0.0.0 – before 16.0.5173.1000 |
| Microsoft | Microsoft Office 2016 | 16.0.0 – before 16.0.5173.1000 |
| Microsoft | Microsoft Excel 2013 Service Pack 1 | 15.0.0.0 – before 15.0.5353.1000 |
| Microsoft | Microsoft Office 2013 Service Pack 1 | 15.0.0 – before 15.0.5353.1000 |
| Microsoft | Microsoft Office Web Apps Server 2013 Service Pack 1 | 15.0.1 – before 15.0.5353.1000 |