CVE-2021-43892: Microsoft Biztalk Esb Toolkit

High severity, CVSS 7.4. EPSS: 3% chance of exploitation in the next 30 days.

Microsoft BizTalk ESB Toolkit Spoofing Vulnerability

Affected products

• Microsoft Biztalk Esb Toolkit: version 2.2 only; version 2.3 only; version 2.4 only

Published 2021-12-15. Last modified 2026-06-17.