CVE-2023-34399
Memory Safety in Headunit Ntg6 Mercedes-Benz User Experience ≤ 2021
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-34399 is a critical-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Mercedes-Benz Headunit Ntg6 Mercedes-Benz User Experience. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique LSA Secrets (T1003.004); ranked in the top 43% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SA-8 (Security and Privacy Engineering Principles) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2023-34399 is an integer overflow vulnerability (CWE-190) in a version of the Boost library used for serialization in the Mercedes-Benz head-unit NTG6. This infotainment system component includes functions to import or export profile settings over USB, where certain table values are handled as serialized archives processed by the vulnerable Boost library. The issue carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), indicating critical severity.
The vulnerability can be exploited by unauthenticated attackers (PR:N) over the network (AV:N) with low attack complexity (AC:L) and no user interaction (UI:N) required. Successful exploitation enables high-impact consequences, including unauthorized access to confidential data (C:H), modification of system integrity (I:H), and disruption of availability (A:H).
Mitigation guidance is detailed in the associated security research advisory at https://securelist.com/mercedes-benz-head-unit-security-research/115218/.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-38477
Vulnerability Data
Mercedes-Benz head-unit NTG6 contains functions to import or export profile settings over USB. Some values of this table are serialized archive according boost library. The version of boost library contains vulnerability integer overflow.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V5.2.6
Mitigating Controls (NIST 800-53 r5) AI
Developer testing and evaluation (static analysis, fuzzing, unit tests) directly finds integer overflow defects before deployment.
Secure engineering principles require use of safe arithmetic constructs or language features that structurally eliminate integer overflow during calculation.
Input validation enforces bounds on values before arithmetic, stopping the conditions that trigger overflow or wraparound.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly require use of safe arithmetic, bounds checks, and testing that prevent integer overflows.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.