Hyundai Gen5W_L 001.001.211214 Firmware Installation AppUpgrade privileges management

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Hyundai Gen5W_L 001.001.211214. This impacts an unknown function of the file AppUpgrade of the component Firmware Installation. The manipulation leads to an unknown weakness. This vulnerability is referenced as CVE-2023-26246. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in Hyundai Gen5W_L 001.001.211214. It has been rated as critical. This issue affects some unknown processing of the file AppUpgrade of the component Firmware Installation. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in the Hyundai Gen5W_L in-vehicle infotainment system AE_E_PE_EUR.S5W_L001.001.211214. The AppUpgrade binary file, which is used during the firmware installation process, can be modified by an attacker to bypass the digital signature check. This indirectly allows an attacker to install custom firmware in the IVI system.

The weakness was published 04/27/2023. The identification of this vulnerability is CVE-2023-26246 since 02/21/2023. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-30071). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector: 🔍

ADP CISA Base Score: 7.8
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/21/2023 🔍
04/27/2023 +64 days 🔍
04/27/2023 +0 days 🔍
04/06/2026 +1075 days 🔍

Sourcesinfo

Advisory: sowhat.iit.cnr.it
Status: Not defined

CVE: CVE-2023-26246 (🔍)
GCVE (CVE): GCVE-0-2023-26246
GCVE (VulDB): GCVE-100-227555
EUVD: 🔍

Entryinfo

Created: 04/27/2023 07:21
Updated: 04/06/2026 16:58
Changes: 04/27/2023 07:21 (36), 05/21/2023 07:16 (1), 05/21/2023 07:22 (10), 01/31/2025 20:41 (24), 11/08/2025 15:23 (2), 04/06/2026 16:58 (9)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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