CVE-2026-8983 PUBLISHED

Backdoor Authentication Token

Assigner: CyberDanube
Reserved: 19.05.2026 Published: 21.07.2026 Updated: 21.07.2026

Autel Maxi Charger Single firmware through V1.03.51 contains a hard-coded authentication token that bypasses authorization checks for multiple management endpoints. An attacker can supply the special token value to invoke privileged functionality without valid authentication.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score: 10

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	Autel
Product	MaxiCharger Single
Versions	Default: unaffected affected from 0 to V1.03.51 (incl.)

Credits

S. Eisenreich-Dietz (CyberDanube) finder
T. Weber (CyberDanube) finder
D. Blagojevic (CyberDanube) finder
F. Koroknai (CyberDanube) finder

References

https://cyberdanube.com/security-research/multiple-vulnerabilities-in-autel-maxi-charger/

Problem Types

CWE-798 CWE

Impacts

CAPEC-115 Authentication Bypass