CVE-2021-4479

Dräger Atlan A350 1.00 <= 1.01 DoS via Medibus Interface

State: Published
Severity: 6.3 Medium
Published: Jun 2, 2026
Updated: Jun 10, 2026
Reserved: Jun 2, 2026

Description

Dräger Atlan A350 versions 1.00 up to and including 1.01 contains an improper input handling vulnerability that allows attackers to cause a denial of service by sending specifically crafted non-Medibus-compliant data through the Medibus interface. Attackers can transmit malformed data to overload the internal processor, gradually disrupting device operation over several hours and causing loss of data transmission, delayed display of real-time curves, and deviation between displayed airway pressure values and screen curves.

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
Atlan A350Dräger	1.00 through 1.01Affected

References

https://static.draeger.com/security/download/2021-05-04-PSA-21-124-1-Security-Advisory-Atlan.pdfvendor-advisory
https://www.vulncheck.com/advisories/drager-atlan-a350-dos-via-medibus-interfacethird-party-advisory

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