March 28, 2022 · Applied Cybernetics Group
CVE-2021-38646 — Microsoft Office
known ransomware use
Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability
- Added to KEV
2022-03-28- Federal due date
2022-04-18- Vendor
- Microsoft
- Product
- Office
- EPSS
- 90.2th percentile (score 0.044, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-38646
CISA short description
Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution.
Required action
Apply updates per vendor instructions.