How severe is CVE-2023-34406?

CVE-2023-34406 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2023-34406 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34406?

CVE-2023-34406 affects Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-34406?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2023-34406 have an EU (EUVD) identifier?

Yes. CVE-2023-34406 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-38484.

When was CVE-2023-34406 published?

CVE-2023-34406 was published on 2025-02-13 and last updated on 2026-06-17.

CVE-2023-34406

CVE-2023-34406 is a low-severity vulnerability in Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience with a CVSS 3.x base score of 3.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: Low (CVSS 3.x base score 3.3)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-38484
Weakness: CWE-190
Affected product: Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience
Published: 2025-02-13
Last modified: 2026-06-17

Description

An issue was discovered on Mercedes Benz NTG 6. A possible integer overflow exists in the user data import/export function of NTG (New Telematics Generation) 6 head units. To perform this attack, local access to USB interface of the car is needed. With prepared data, an attacker can cause the User-Data service to fail. The failed service instance will restart automatically.

Frequently asked questions

What is CVE-2023-34406?: An issue was discovered on Mercedes Benz NTG 6. A possible integer overflow exists in the user data import/export function of NTG (New Telematics Generation) 6 head units. To perform this attack, local access to USB interface of the car is needed. With prepared data, an attacker can cause the User-Data service to fail. The failed service instance will restart automatically.
How severe is CVE-2023-34406?: CVE-2023-34406 has a CVSS 3.x base score of 3.3, rated low severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2023-34406 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34406?: CVE-2023-34406 affects Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-34406?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-34406 have an EU (EUVD) identifier?: Yes. CVE-2023-34406 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-38484.
When was CVE-2023-34406 published?: CVE-2023-34406 was published on 2025-02-13 and last updated on 2026-06-17.

References

https://securelist.com/mercedes-benz-head-unit-security-research/115218/

Affected products (1)

cpe:2.3:a:mercedes-benz:headunit_ntg6_mercedes-benz_user_experience:*:*:*:*:*:*:*:*

More vulnerabilities in Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience

CVE-2023-34399 — Critical (CVSS 9.8): Mercedes-Benz head-unit NTG6 contains functions to import or export profile settings over USB. Some values of this…
CVE-2023-34402 — High (CVSS 7.7): Mercedes-Benz head-unit NTG6 contains functions to import or export profile settings over USB. Inside file is…
CVE-2023-34400 — High (CVSS 7.5): Mercedes-Benz head-unit NTG6 contains functions to import or export profile settings over USB. In case of parsing file,…
CVE-2023-34398 — High (CVSS 7.5): Mercedes-Benz head-unit NTG6 contains functions to import or export profile settings over USB. Some values of this…
CVE-2023-34397 — High (CVSS 7.5): Mercedes Benz head-unit NTG 6 contains functions to import or export profile settings over USB. During parsing you can…
CVE-2024-37600 — Medium (CVSS 6.8): An issue was discovered in Mercedes Benz NTG (New Telematics Generation) 6 through 2021. A possible stack buffer…

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