An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on…
Priority LOW 32CWE-20Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00804 56th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mercedes-benz:mercedes-benz_user_experience:*:*:*:*:*:*:*:* | up to 2021 | Vulnerable | Mercedes-benz |
| cpe:2.3:h:mercedes-benz:a_220:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mercedes-benz |
| cpe:2.3:h:mercedes-benz:a_220_4matic:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mercedes-benz |
| cpe:2.3:h:mercedes-benz:e_350:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mercedes-benz |
| cpe:2.3:h:mercedes-benz:e_350_4matic:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mercedes-benz |
| cpe:2.3:h:mercedes-benz:eqc:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mercedes-benz |
| cpe:2.3:h:mercedes-benz:gle_350:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mercedes-benz |
| cpe:2.3:h:mercedes-benz:gle_350_4matic:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Mercedes-benz |
- cpe:2.3:a:mercedes-benz:mercedes-benz_user_experience:*:*:*:*:*:*:*:* Versions up to 2021 Vulnerable ·Mercedes-benz
- cpe:2.3:h:mercedes-benz:a_220:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mercedes-benz
- cpe:2.3:h:mercedes-benz:a_220_4matic:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mercedes-benz
- cpe:2.3:h:mercedes-benz:e_350:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mercedes-benz
- cpe:2.3:h:mercedes-benz:e_350_4matic:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mercedes-benz
- cpe:2.3:h:mercedes-benz:eqc:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mercedes-benz
- cpe:2.3:h:mercedes-benz:gle_350:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mercedes-benz
- cpe:2.3:h:mercedes-benz:gle_350_4matic:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Mercedes-benz
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-23906
- 2026-10-03 Alias added: GHSA-jx2c-9rxg-v58w
References
Exploit 1
Sources
- CVE-2021-23906 · CVE Program
- CVE-2021-23906 · NVD
- FIRST EPSS
- GHSA-jx2c-9rxg-v58w · GitHub Advisory Database · CC BY 4.0
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