How severe is CVE-2023-34403?

CVE-2023-34403 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-34403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34403?

CVE-2023-34403 affects Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-34403?

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

Does CVE-2023-34403 have an EU (EUVD) identifier?

Yes. CVE-2023-34403 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-38481.

When was CVE-2023-34403 published?

CVE-2023-34403 was published on 2025-02-13 and last updated on 2026-06-17.

CVE-2023-34403

CVE-2023-34403 is a medium-severity vulnerability in Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience with a CVSS 3.x base score of 4.9. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-38481
Weakness: CWE-284
Affected product: Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience
Published: 2025-02-13
Last modified: 2026-06-17

Description

Mercedes-Benz head-unit NTG6 has Ethernet pins on Base Board to connect module CSB. Attacker can connect to this pins and get access to internal network. A race condition can be acquired and attacker can spoof “UserData” with desirable file path and access it though backup on USB.

Frequently asked questions

What is CVE-2023-34403?: Mercedes-Benz head-unit NTG6 has Ethernet pins on Base Board to connect module CSB. Attacker can connect to this pins and get access to internal network. A race condition can be acquired and attacker can spoof “UserData” with desirable file path and access it though backup on USB.
How severe is CVE-2023-34403?: CVE-2023-34403 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-34403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34403?: CVE-2023-34403 affects Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-34403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-34403 have an EU (EUVD) identifier?: Yes. CVE-2023-34403 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-38481.
When was CVE-2023-34403 published?: CVE-2023-34403 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:*:*:*:*:*:*:*:*

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