Vulnerability · Published Sep 15, 2021 · Assigned by microsoft
CVE-2021-38655Microsoft 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 6.4% (higher than 94% of all known vulnerabilities).
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)6.4%top 6.3% 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 | Microsoft 365 Apps for Enterprise | 16.0.1 – before https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Excel 2013 Service Pack 1 | 15.0.0.0 – before 5381.1000 |
| Microsoft | Microsoft Excel 2016 | 16.0.0.0 – before 5215.1000 |
| Microsoft | Microsoft Office 2019 | 19.0.0 – before https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office 2019 for Mac | 16.0.0 – before 16.53.21091200 |
| Microsoft | Microsoft Office Online Server | 16.0.1 – before 10378.20000 |
| Microsoft | Microsoft Office Web Apps Server 2013 Service Pack 1 | 15.0.1 – before 5381.1000 |
References
- Microsoft Excel Remote Code Execution Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38655 x_refsource_MISC, x_transferred
- https://www.zerodayinitiative.com/advisories/ZDI-21-1080/ x_refsource_MISC, x_transferred