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CVE-2023-26243

7.8 · HIGH

An issue was discovered in the Hyundai Gen5W_L in-vehicle infotainment system AE_E_PE_EUR.S5W_L001.001.211214.

Published Apr 27, 2023CWE-269EPSS 0.34%

Overview

CVE-2023-26243 is a high-severity vulnerability. It was published on April 27, 2023 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

An issue was discovered in the Hyundai Gen5W_L in-vehicle infotainment system AE_E_PE_EUR.S5W_L001.001.211214. The decryption binary used to decrypt firmware files has an information leak that allows an attacker to read the AES key and initialization vector from memory. An attacker may exploit this to create custom firmware that may be installed in the IVI system. Then, an attacker may be able to install a backdoor in the IVI system that may allow him to control it, if it is connected to the Internet through Wi-Fi.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refsowhat.iit.cnr.itRefsowhat.iit.cnr.it:8443/can-work/chimaeraRefsowhat.iit.cnr.it:8443/can-work/chimaera/-/blob/main/Report/IIT-01-2023.pdfRefsowhat.iit.cnr.itRefsowhat.iit.cnr.it:8443/can-work/chimaeraRefsowhat.iit.cnr.it:8443/can-work/chimaera/-/blob/main/Report/IIT-01-2023.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2023-26243?

CVE-2023-26243 is a high-severity vulnerability. It was published on April 27, 2023 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2023-26243?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-26243?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-26243?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-26243 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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