CVE-2021-23908

An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz...

2.9 Low

An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz vehicles through 2021. A type confusion issue affects MultiSvSetAttributes in the HiQnet Protocol, leading to remote code execution.

Attack profile

How easy it is to exploit

Attack vector: Physical
Complexity: High
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

2.36%Up 0.5 points since May 14, 2021

What each source reports

CVE List Score used 2.9

Record: CVE-2021-23908
CVSS 3.1: 2.9 LowCVSS:3.1/AC:H/AV:P/A:N/C:L/I:L/PR:N/S:U/UI:R
Updated: 2026-11-02

EUVDEUVD-2021-10831 2.9

Record: EUVD-2021-10831
CVSS 3.1: 2.9 LowCVSS:3.1/AC:H/AV:P/A:N/C:L/I:L/PR:N/S:U/UI:R
Updated: 2026-11-03

GitHub AdvisoriesGHSA-r57j-hvj5-9m8v No score

An issue was discovered in the Headunit NTG6 in the MBUX Infotainment System on Mercedes-Benz...

Record: GHSA-r57j-hvj5-9m8v
Weakness: CWE-843
Updated: 2026-11-02

NVD 2.9

Record: CVE-2021-23908
CVSS 3.1: 2.9 LowCVSS:3.1/AV:P/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-843
Updated: 2026-11-02

Affected products

mercedes-benz headunit ntg6 mercedes-benz user experience

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-23908 is a low vulnerability (CVSS 2.9) in Mercedes-benz Headunit Ntg6 Mercedes-benz User Experience, published May 13, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.36%, the 83rd percentile. No source names a fixed version.