Weak encoding for password in UDS services

published 2023-12-01 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-32516

cvss: 3.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits: 0; none known

Access to critical Unified Diagnostics Services (UDS) of the Modular Infotainment Platform 3 (MIB3) infotainment is transmitted via Controller Area Network (CAN) bus in a form that can be easily decoded by attackers with physical access to the vehicle.

Vulnerability discovered on Škoda Superb III (3V3) - 2.0 TDI manufactured in 2022.

Exploit prediction

0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
NVD	3.1	2.4	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

JOYNEXT MIB3 Infotainment Unit

Classification

Weakness

CWE-261 Weak Encoding for Password
CWE-326 Inadequate Encryption Strength

References

asrg.io /security-advisories/cve-2023-28896/
third-party-advisory

Sources

CVE List CVE-2023-28896
NVD CVE-2023-28896

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Summary