CVE-2021-43935: Baxter Welch Allyn Connex Cardio

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

The impacted products, when configured to use SSO, are affected by an improper authentication vulnerability. This vulnerability allows the application to accept manual entry of any active directory (AD) account provisioned in the application without supplying a password, resulting in access to the application as the supplied AD account, with all associated privileges.

Affected products

• Baxter Welch Allyn Connex Cardio: from 1.0.0, up to and including 1.1.1
• Baxter Welch Allyn Diagnostic Cardiology Suite: version 2.1.0 only
• Baxter Welch Allyn Hscribe Holter Analysis System Firmware: from 5.01, up to and including 6.4.0
• Baxter Welch Allyn Q-Stress Cardiac Stress Testing System Firmware: from 6.0.0, up to and including 6.3.1
• Baxter Welch Allyn Rscribe Resting Ecg System: from 5.01, up to and including 7.0.0
• Baxter Welch Allyn Vision Express Holter Analysis System: from 6.1.0, up to and including 6.4.0
• Baxter Welch Allyn Xscribe Cardiac Stress Testing System Firmware: from 5.01, up to and including 6.3.1

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