PT-2023-20560 · Hyundai · Hyundai Gen5W L

Published 2023-04-27 · Updated 2026-06-04 · CVE-2023-26245

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Hyundai Gen5W L in-vehicle infotainment system version AE E PE EUR.S5W L001.001.211214

Description An issue was discovered in the Hyundai Gen5W L in-vehicle infotainment system. 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, such as newer, older, or customized. This indirectly allows an attacker to install custom firmware in the IVI system.

Recommendations For Hyundai Gen5W L in-vehicle infotainment system version AE E PE EUR.S5W L001.001.211214, as a temporary workaround, consider restricting access to the AppUpgrade binary file until a patch is available. Additionally, avoid using the firmware installation process with untrusted firmware versions to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Incorrect Authorization

Improper Privilege Management

Weakness Enumeration

CWE-863

CWE-269

Related Identifiers

CVE-2023-26245

Affected Products

Hyundai Gen5W L

References · 8

• 🔥 https://sowhat.iit.cnr.it:8443/can-work/chimaera/-/blob/main/Report/IIT-01-2023.pdf · Exploit
• 🔥 https://sowhat.iit.cnr.it:8443/can-work/chimaera · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-26245 · Security Note
• https://osv.dev/vulnerability/CVE-2023-26245 · Vendor Advisory
• https://t.me/cibsecurity/62961 · Telegram Post
• https://t.me/cveNotify/166051 · Telegram Post
• https://sowhat.iit.cnr.it · Note
• https://t.me/cvenotify/109516 · Telegram Post