CVE-2021-38646

Known Exploited
Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability

Description

Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 68.88% Top 5%
KEV Since 
Vendor Advisory microsoft.com
Affected: Microsoft Microsoft Office 2019
Affected: Microsoft Microsoft 365 Apps for Enterprise
Affected: Microsoft Microsoft Office 2016
Affected: Microsoft Microsoft Office 2013 Service Pack 1
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2021-38646?
CVE-2021-38646 has been scored as a high severity vulnerability.
How to fix CVE-2021-38646?
To fix CVE-2021-38646, 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-2021-38646 being actively exploited in the wild?
It is confirmed that CVE-2021-38646 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~69% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-38646?
CVE-2021-38646 affects Microsoft Microsoft Office 2019, Microsoft Microsoft 365 Apps for Enterprise, Microsoft Microsoft Office 2016, Microsoft Microsoft Office 2013 Service Pack 1.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.