CVE-2021-28456

Microsoft Excel Information Disclosure Vulnerability

Description

Microsoft Excel Information Disclosure Vulnerability

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 3.47% Top 15%

Vendor Advisory microsoft.com

Affected: Microsoft Microsoft Office 2019

Affected: Microsoft Microsoft Office 2019 for Mac

Affected: Microsoft Microsoft Office Online Server

Affected: Microsoft Microsoft 365 Apps for Enterprise

Affected: Microsoft Microsoft Excel 2016

Affected: Microsoft Microsoft Excel 2010 Service Pack 2

Affected: Microsoft Microsoft Excel 2013 Service Pack 1

Affected: Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1

References

Link	Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28456	patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-28456?: CVE-2021-28456 has been scored as a medium severity vulnerability.
How to fix CVE-2021-28456?: To fix CVE-2021-28456, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-28456 being actively exploited in the wild?: It is possible that CVE-2021-28456 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-28456?: CVE-2021-28456 affects Microsoft Microsoft Office 2019, Microsoft Microsoft Office 2019 for Mac, Microsoft Microsoft Office Online Server, Microsoft Microsoft 365 Apps for Enterprise, Microsoft Microsoft Excel 2016, Microsoft Microsoft Excel 2010 Service Pack 2, Microsoft Microsoft Excel 2013 Service Pack 1, Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1.

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