International Standards Organization ISO 15118-2

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1. EXECUTIVE SUMMARY

  • CVSS v4 7.2
  • ATTENTION: Low Attack Complexity
  • Standard: ISO 15118-2 Network and Application Protocol Requirements
  • Equipment: EV Car Chargers
  • Vulnerability: Improper Restriction of Communication Channel to Intended Endpoints

2. RISK EVALUATION

Successful exploitation of this vulnerability could result in man-in-the-middle attacks.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following ISO 15118 part is affected:

  • ISO 15118 standard: Part 15118-2 Network and Application Protocol Requirements

3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER RESTRICTION OF COMMUNICATION CHANNEL TO INTENDED ENDPOINTS CWE-923

By manipulating the Signal Level Attenuation Characterization (SLAC) protocol with spoofed measurements, an attacker can stage a man-in-the-middle attack between an electric vehicle and chargers that comply with the ISO 15118-2 part. This vulnerability may be exploitable wirelessly, within close proximity, via electromagnetic induction.

CVE-2025-12357 has been assigned to this vulnerability. A CVSS v3 base score of 8.3 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H).

A CVSS v4 score has also been calculated for CVE-2025-12357. A base score of 7.2 has been calculated; the CVSS vector string is (AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N).

3.3 BACKGROUND