Vulnerability · Published May 11, 2021 · Assigned by microsoft
CVE-2021-31178Microsoft Office 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 16.0% (higher than 97% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)16.0%top 3.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Microsoft Office 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 Online Server | 16.0.1 – before 16.0.10374.20000 |
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 – before https://aka.ms/OfficeSecurityReleases |
| Microsoft | Microsoft Excel 2016 | 16.0.0.0 – before 16.0.5161.1000 |
| Microsoft | Microsoft Office 2016 | 16.0.0 – before 16.0.5161.1000 |
| Microsoft | Microsoft Excel 2013 Service Pack 1 | 15.0.0.0 – before 15.0.5345.1000 |
| Microsoft | Microsoft Office 2013 Service Pack 1 | 15.0.0 – before 15.0.5345.1000 |
| Microsoft | Microsoft Office Web Apps Server 2013 Service Pack 1 | 15.0.1 – before 15.0.5345.1000 |