Dräger Perseus A500 2.00-2.02 DoS via Medibus Interface

Advisories

Dräger Perseus A500 2.00-2.02 DoS via Medibus Interface

severity: medium
date: 6/2/2026
Affecting: Perseus A500 <= 2.00, 2.01, 2.02
CVE: CVE-2019-25723
CWE: CWE-1286 Improper Validation of Syntactic Correctness of Input
CVSS: 6.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
References: https://static.draeger.com/security
https://www.vulncheck.com/advisories/dr-ger-sc-monitoring-devices-hard-coded-credentials-and-dos
Description: Dräger Perseus A500 software versions 2.00 through 2.02 contains an improper input handling vulnerability that allows external attackers to cause a denial of service by sending specifically crafted non-Medibus-compliant data through the Medibus interface. Attackers can overload the internal processor with malformed data to trigger a warm restart, causing ventilation pressure to drop to ambient level and interrupting ventilation for several seconds before therapy resumes.

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