What is the CVSS score of CVE-2021-23906?

CVE-2021-23906 has a CVSS 3.1 base score of 6.8 (Medium). CVSS vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.8%.

Is there a public PoC exploit available for CVE-2021-23906?

Yes, a public proof-of-concept exploit is available for CVE-2021-23906. Prioritise patching immediately. EPSS: 0.8%.

Mercedes Benz User Experience CVE-2021-23906

MEDIUM

Improper Input Validation (CWE-20)

2021-05-13 cve@mitre.org

RCE Mercedes Benz User Experience

6.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.8 MEDIUM

AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

May 13, 2021 - 19:15 nvd

MEDIUM 6.8

DescriptionNVD

An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. A Message Length is not checked in the HiQnet Protocol, leading to remote code execution.

AnalysisAI

An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-20. An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. A Message Length is not checked in the HiQnet Protocol, leading to remote code execution. Affected products include: Mercedes-Benz Mercedes-Benz User Experience. Version information: through 2021..

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.