Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Sep 15, 2021 · Catalog

   Detected

   Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution.

2. Mar 28, 2022 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Apr 18, 2022 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Aug 10, 2026 · Catalog

   Updated

   Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution.

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 KEVConfirmed exploitationCVE-2021-38646

  Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution.

  cisa.gov
• CVE.orgVulnerability recordCVE-2021-38646

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2021-38646

  30-day exploitation probability 8.0%

  first.org
• NIST NVDVulnerability recordCVE-2021-38646

  Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability

  nvd.nist.gov

References

• Patch · msrc.microsoft.com
• CISA note · nvd.nist.gov
• Patch · portal.msrc.microsoft.com
• US Government Resource · cisa.gov