# CVE-2019-25723

## Summary

- **CVE ID:** CVE-2019-25723
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (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)
- **CWE:** CWE-1286
- **Published:** Jun 2, 2026
- **Last Modified:** Jun 3, 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.

## Affected Products

- Dräger — Perseus A500 (2.00)
- Dräger — Perseus A500 (2.01)
- Dräger — Perseus A500 (2.02)
- Dräger — Perseus A500 (2.03)

## References

- [CNA](https://static.draeger.com/security)
- [CNA](https://www.vulncheck.com/advisories/dr-ger-perseus-a500-dos-via-medibus-interface)
- [CNA](https://static.draeger.com/security/download/2020-06-PSA-20-169-01-Security-Advisory-Perseus-A500-SW20n.pdf)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 14.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._