CVE-2021-38646
Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability
Published Sep 15, 2021 · updated Aug 10, 2026 · microsoft 365 apps
Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution.
Timeline
Detection, updates, and resolution for this record.
Sep 15, 2021 · Catalog
Detected
Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution.
Mar 28, 2022 · CISA KEV
Known exploited
Apply updates per vendor instructions.
Apr 18, 2022 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Aug 10, 2026 · Catalog
Updated
Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution.
Required action
Apply updates per vendor instructions.
CISA due date Apr 18, 2022
Affected
- cpe microsoft/365 appsversion unspecified
- cpe microsoft/office2013
- cpe microsoft/office 2016version unspecified
- cpe microsoft/office 2019version unspecified
- vendor Microsoft Officeversion unspecified
Sources
- CISA KEVCVE-2021-38646
Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution.
cisa.gov - CVE.orgCVE-2021-38646
Official CVE identifier
cve.org - FIRST EPSSCVE-2021-38646
30-day exploitation probability 8.0%
first.org - NIST NVDCVE-2021-38646
Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability
nvd.nist.gov