CVE-2023-26244

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-04-27 · updated 2026-06-17
Weakness: CWE-269

Description

An issue was discovered in the Hyundai Gen5W_L in-vehicle infotainment system AE_E_PE_EUR.S5W_L001.001.211214. The AppDMClient binary file, which is used during the firmware installation process, can be modified by an attacker to bypass the digital signature check of AppUpgrade and .lge.upgrade.xml files, which are used during the firmware installation process. This indirectly allows an attacker to use a custom version of AppUpgrade and .lge.upgrade.xml files.

Affected products

Hyundai Gen5W L Firmware: ae_e_pe_eur.s5w_l001.001.211214

References

https://sowhat.iit.cnr.it
https://sowhat.iit.cnr.it:8443/can-work/chimaera
https://sowhat.iit.cnr.it:8443/can-work/chimaera/-/blob/main/Report/IIT-01-2023.pdf
https://sowhat.iit.cnr.it
https://sowhat.iit.cnr.it:8443/can-work/chimaera
https://sowhat.iit.cnr.it:8443/can-work/chimaera/-/blob/main/Report/IIT-01-2023.pdf

Get alerted when CVE-2023-26244 or the next vulnerability affects your stack