CVE-2019-25723

Dräger Perseus A500 2.00-2.02 DoS via Medibus Interface

State: Published
Severity: 6.3 Medium
Published: Jun 2, 2026
Updated: Jun 3, 2026
Reserved: Jun 2, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	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	VulnCheck
3.1	4.0 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L	VulnCheck

Weaknesses

CWE-1286 Improper Validation of Syntactic Correctness of Input

Affected Products

Product	Versions
Perseus A500Dräger	2.00Affected 2.01Affected 2.02Affected 2.03Not affected

References

https://static.draeger.com/security/download/2020-06-PSA-20-169-01-Security-Advisory-Perseus-A500-SW20n.pdfvendor-advisory
https://www.vulncheck.com/advisories/dr-ger-perseus-a500-dos-via-medibus-interfacethird-party-advisory

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