Vulnerability in Dräger Atlan A350
CVE-2021-4479
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (14.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Dräger Atlan A350 — versions 2.0, 1.00, 0
Weakness classification (CWE)
References
- static.draeger.com/security (vendor-advisory)
- www.vulncheck.com/advisories/dr-ger-atlan-a350-dos-via-medibus-interface
- static.draeger.com/security/download/2021-05-04-PSA-21-124-1-Security-Advisory-… (vendor-advisory)
- www.vulncheck.com/advisories/drager-atlan-a350-dos-via-medibus-interface (third-party-advisory)
Frequently asked questions
- What is CVE-2021-4479?
- CVE-2021-4479 is a medium-severity vulnerability in Dräger Atlan A350, classified under CWE-1286. CVSS score: 4.0/10. Published 2026-06-02.
- How severe is CVE-2021-4479?
- Medium severity. CVSS v3 base score is 4.0 out of 10.