CVE-2023-26245 Security feature bypass in n/a

High 7.8 Published 27 Apr 2023 Updated 31 Jan 2025

Attackers can modify the AppUpgrade binary to bypass version checks and install custom firmware on Hyundai IVI systems.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-26245?

CVE-2023-26245 is a high-severity vulnerability in n/a, published on 27 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in the Hyundai Gen5W_L in-vehicle infotainment system AE_E_PE_EUR.S5W_L001.001.211214. The AppUpgrade binary file, which is used during the firmware installation process, can be modified by an attacker to bypass the version check in order to install any firmware version (e.g., newer, older, or customized). This indirectly allows an attacker to install custom firmware in the IVI system.

Weakness: CWE-269, CWE-863

Which versions are affected by CVE-2023-26245?

It affects 1 product.

Products include Hyundai Gen5w L Firmware.

How do I fix CVE-2023-26245?

No fix has been published for CVE-2023-26245 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-26245 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-26245 exists.

Sources

Also known as GHSA-5mcp-h82r-f9v7.