title: Contec Health CMS8000
description: A threat actor with momentary access to the device can plug in a USB drive and perform a malicious firmware update, resulting in permanent changes to device functionality. No authentication or controls are in place to prevent a threat actor from maliciously modifying firmware and performing a drive-by attack to load the firmware on any CMS8000 device.
problem types: CWE-284 Improper Access Control
affected:
{
product: CMS8000 CONTEC ICU CCU Vital Signs Patient Monitor
vendor: Contec Health
versions:
status: affected, version: All
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: PHYSICAL
availabilityImpact: HIGH
baseScore: 6.8
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
workarounds: Contec Health has not responded to requests to work with CISA to mitigate these vulnerabilities. Users of these affected products are invited to contact Contec Health for additional information.
The following mitigations could assist in reducing the risk for exploitation of vulnerabilities:
Disabling UART functionality at the CPU level
Enforcing unique device authentication before granting access to the terminal / bootloader
Where possible, enforcing secure boot.
Tamper stickers on the device casing to indicate when a device has been opened