Dräger Atlan A350 1.00/1.01 Medibus Interface improper validation of syntactic correctness of input

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Dräger Atlan A350 1.00/1.01. This vulnerability affects unknown code of the component Medibus Interface. Performing a manipulation results in improper validation of syntactic correctness of input. This vulnerability is cataloged as CVE-2021-4479. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Dräger Atlan A350 1.00/1.01. This affects an unknown functionality of the component Medibus Interface. The manipulation with an unknown input leads to a improper validation of syntactic correctness of input vulnerability. CWE is classifying the issue as CWE-1286. The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax. This is going to have an impact on availability. The summary by CVE is:

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.

It is possible to read the advisory at static.draeger.com. This vulnerability is uniquely identified as CVE-2021-4479 since 06/02/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.8

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 4.0
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper validation of syntactic correctness of input
CWE: CWE-1286 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Atlan A350 2.0

Timelineinfo

06/02/2026 CVE reserved
06/02/2026 +0 days VulDB entry created
06/03/2026 +0 days Advisory disclosed
06/11/2026 +8 days VulDB entry last update

Sourcesinfo

Advisory: static.draeger.com
Status: Confirmed

CVE: CVE-2021-4479 (🔒)
GCVE (CVE): GCVE-0-2021-4479
GCVE (VulDB): GCVE-100-368019

Entryinfo

Created: 06/03/2026 01:26
Updated: 06/11/2026 15:17
Changes: 06/03/2026 01:26 (76), 06/11/2026 15:17 (1)
Complete: 🔍
Cache ID: 216::103

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