CVE-2023-26243

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Summary

CVECVE-2023-26243
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-04-27 01:15:08 UTC
Updated2026-04-06 14:23:28 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000410000 probability, percentile 0.124360000 (date 2026-04-07)

Problem Types: CWE-668 | CWE-22 | n/a | CWE-22 CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1ADPDECLARED7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Hyundai Gen5w L In-vehicle Infotainment System - All All All
Operating System Hyundai Gen5w L In-vehicle Infotainment System Firmware 5w.xxx.s5w_l.001.001.221129 All All All
Operating System Hyundai Gen5w L In-vehicle Infotainment System Firmware ae_e_pe_eur.s5w_l001.001.211214 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Can Work / CHIMAERA · GitLab af854a3a-2127-422b-91ae-364da2661108 sowhat.iit.cnr.it Exploit, Third Party Advisory
sowhat | Security Of the Way to Handle Automotive sysTems af854a3a-2127-422b-91ae-364da2661108 sowhat.iit.cnr.it Not Applicable
Report/IIT-01-2023.pdf · main · Can Work / CHIMAERA · GitLab af854a3a-2127-422b-91ae-364da2661108 sowhat.iit.cnr.it Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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