Auth bypass in Hyundai Gen5w L
CVE-2023-26244
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.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (23.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000
Affected products
- Hyundai Gen5w L
- Hyundai Gen5w L Firmware — versions ae_e_pe_eur.s5w_l001.001.211214
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sowhat.iit.cnr.it (Not Applicable)
- sowhat.iit.cnr.it:8443/can-work/chimaera/-/blob/main/Report/IIT-01-2023.pdf (Exploit, Third Party Advisory)
- sowhat.iit.cnr.it:8443/can-work/chimaera (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-26244?
- CVE-2023-26244 is a high-severity vulnerability in Hyundai Gen5w L, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2023-04-27.
- How severe is CVE-2023-26244?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-26244 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.