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
- 94.5th percentile (score 0.080, as of
2026-09-16) - NVD CVSS v3.1
- 7.8 (HIGH)
- 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.
NVD description
Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability