Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability (CVE-2021-38646)
Severity: high · Patch status: patched · Since 2022-03-28 · CVE-2021-38646
Microsoft Office Access Connectivity Engine contains an unspecified vulnerability which can allow for remote code execution. CISA added CVE-2021-38646 to its Known Exploited Vulnerabilities catalog on Mar 28, 2022, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Apr 18, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
