CVE-2021-23906
MEDIUMCVSS 6.8/10EPSS 0.80%
Last modified
CVE-2021-23906 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. 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.. EPSS estimates a 0.80% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mercedes-Benz | Mercedes-Benz User Experience | <= 2021 |
References
- https://keenlab.tencent.com/en/whitepapers/Mercedes_Benz_Security_Research_Report_Final.pdfExploit, Third Party Advisory
- https://media.daimler.com/marsMediaSite/en/instance/ko.xhtml?oid=49946866Third Party Advisory
- https://keenlab.tencent.com/en/whitepapers/Mercedes_Benz_Security_Research_Report_Final.pdfExploit, Third Party Advisory
- https://media.daimler.com/marsMediaSite/en/instance/ko.xhtml?oid=49946866Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-23906?
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.
How severe is CVE-2021-23906?
CVE-2021-23906 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23906?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-23906?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST