What is the CVSS score of CVE-2021-43935?

CVE-2021-43935 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.1%.

Baxter CVE-2021-43935

CRITICAL

Authentication Bypass Using an Alternate Path or Channel (CWE-288)

2021-12-15 ics-cert@hq.dhs.gov

Authentication Bypass Baxter Welch Allyn Connex Cardio Welch Allyn Diagnostic Cardiology Suite Welch Allyn Rscribe Resting Ecg System Welch Allyn Vision Express Holter Analysis System Welch Allyn Hscribe Holter Analysis System Firmware Welch Allyn Q Stress Cardiac Stress Testing System Firmware Welch Allyn Xscribe Cardiac Stress Testing System Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 15, 2021 - 19:15 nvd

CRITICAL 9.8

DescriptionNVD

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.

AnalysisAI

The impacted products, when configured to use SSO, are affected by an improper authentication vulnerability. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-288. 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 include: Baxter Welch Allyn Connex Cardio, Baxter Welch Allyn Diagnostic Cardiology Suite, Baxter Welch Allyn Rscribe Resting Ecg System, Baxter Welch Allyn Vision Express Holter Analysis System, Baxter Welch Allyn Hscribe Holter Analysis System Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.