CVE-2021-43935

Name: CVE-2021-43935
Creator: NVD / NIST
Published: 2021-12-15T19:15:15.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.08%

Last modified Jun 17, 2026

CVE-2021-43935 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.08% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.08%

60.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Baxter	Welch Allyn Connex Cardio	>= 1.0.0, <= 1.1.1
Baxter	Welch Allyn Diagnostic Cardiology Suite	2.1.0
Baxter	Welch Allyn Rscribe Resting Ecg System	>= 5.01, <= 7.0.0
Baxter	Welch Allyn Vision Express Holter Analysis System	>= 6.1.0, <= 6.4.0
Baxter	Welch Allyn Hscribe Holter Analysis System Firmware	>= 5.01, <= 6.4.0
Baxter	Welch Allyn Q-Stress Cardiac Stress Testing System Firmware	>= 6.0.0, <= 6.3.1
Baxter	Welch Allyn Xscribe Cardiac Stress Testing System Firmware	>= 5.01, <= 6.3.1

References

https://www.cisa.gov/uscert/ics/advisories/icsma-21-343-01Mitigation, Third Party Advisory, US Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsma-21-343-01Mitigation, Third Party Advisory, US Government Resource

Timeline

Published: Dec 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43935?

How severe is CVE-2021-43935?

CVE-2021-43935 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.08% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43935?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-43935?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST