CVE-2023-34404: Mercedes-Benz head-unit NTG6 has Ethernet pins on Base Board to connect module CSB

Routine

MEDIUM 4.9DOWNGRADE

CVE-2023-34404 is a medium-severity flaw (CVSS 4.9) affecting headunit ntg6 mercedes-benz user experience. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Mercedes-Benz head-unit NTG6 has Ethernet pins on Base Board to connect module CSB. Attacker can connect to these pins and get access to internal network. As a result, by accessing a specific port an attacker can send call request to all registered services in router and achieve command injection vulnerability.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	4.9 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.4% (top 61%)
CISA exploited list	No
Weakness	CWE-284
Published	2025-02-13
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: mercedes-benz

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-02-13 23:15 UTCPublished CVE record published
2026-06-17 06:03 UTCUpdated Record last modified

mercedes-benz headunit ntg6 mercedes-benz user experience DOWNGRADE

Affected: 2021

Fixed in: no fixed release known

Safe to downgrade to: a release before 2021

1. Check installed version

apt-cache policy headunit-ntg6-mercedes-benz-user-experience || rpm -q headunit-ntg6-mercedes-benz-user-experience || headunit-ntg6-mercedes-benz-user-experience --version

2. No fixed release: DOWNGRADE to a release before 2021 (Debian / Ubuntu)

apt-cache madison headunit-ntg6-mercedes-benz-user-experience sudo apt install headunit-ntg6-mercedes-benz-user-experience=<VERSION_BEFORE_2021> sudo apt-mark hold headunit-ntg6-mercedes-benz-user-experience

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list headunit-ntg6-mercedes-benz-user-experience sudo dnf downgrade headunit-ntg6-mercedes-benz-user-experience-<VERSION_BEFORE_2021> sudo dnf versionlock add headunit-ntg6-mercedes-benz-user-experience

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-34404?

headunit ntg6 mercedes-benz user experience: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-34404 being exploited?

CVE-2023-34404 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-34404 affect?

CVE-2023-34404 affects headunit ntg6 mercedes-benz user experience. Severity is medium (CVSS 4.9). Mercedes-Benz head-unit NTG6 has Ethernet pins on Base Board to connect module CSB. Attacker can connect to these pins and get access to internal network. As a result, by accessing a specific port an attacker can send call request to all re

How urgent is CVE-2023-34404?

Priority 27/100. No elevated risk signals yet.

Related CVEs

CVE-2024-37603 MEDIUM 4.6 DOWNGRADE An issue was discovered in Mercedes Benz NTG (New Telematics Generation) 6
CVE-2024-37602 MEDIUM 4.6 UPGRADE An issue was discovered in Mercedes Benz NTG (New Telematics Generation) 6 through 2021
CVE-2024-37601 MEDIUM 4.6 UPGRADE An issue was discovered in Mercedes Benz NTG (New Telematics Generation) 6
CVE-2024-37600 MEDIUM 6.8 UPGRADE An issue was discovered in Mercedes Benz NTG (New Telematics Generation) 6 through 2021
CVE-2023-34406 LOW 3.3 UPGRADE An issue was discovered on Mercedes Benz NTG 6

References

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