Vulnerability · Published Apr 13, 2021 · Assigned by microsoft
CVE-2021-28456Microsoft Excel Information Disclosure Vulnerability
Medium 5.5
In plain English
A medium-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 3.7% (higher than 90% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)3.7%top 10.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Microsoft Excel Information Disclosure Vulnerability
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Office 2019 | 19.0.0 – before https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Office 2019 for Mac | 16.0.0 – before publication |
| Microsoft | Microsoft Office Online Server | 16.0.1 – before publication |
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 – before https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Excel 2016 | 16.0.0.0 – before publication |
| Microsoft | Microsoft Excel 2010 Service Pack 2 | 13.0.0.0 – before publication |
| Microsoft | Microsoft Excel 2013 Service Pack 1 | 15.0.0.0 – before publication |
| Microsoft | Microsoft Office Web Apps Server 2013 Service Pack 1 | 15.0.1 – before publication |