Privilege escalation in Hyundai Gen5w L
CVE-2023-26243
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.
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 (25.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.5% 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-2023-26243?
- CVE-2023-26243 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-2023-26243?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-26243 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.