CVE-2026-8982 in MaxiCharger Single
Summary
by MITRE • 07/22/2026
Two undocumented privileged accounts exist in Autel Maxi Charger Single firmware through V1.03.51. The accounts use vendor-defined password derivation mechanisms based on device-specific values, allowing an attacker with knowledge of the algorithm and required inputs to authenticate to the web management interface with administrative privileges.
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Analysis
by VulDB Data Team • 07/22/2026
The vulnerability described represents a critical privilege escalation issue within the Autel Maxi Charger Single firmware version 1.03.51, where two undocumented administrator accounts exist in the system. This flaw constitutes a fundamental security weakness that directly violates secure system design principles and creates an unauthorized access vector for malicious actors. The presence of these hidden accounts indicates poor security hygiene and suggests inadequate access control mechanisms during the development lifecycle. According to CWE-798, this vulnerability aligns with the weakness of using hardcoded credentials without proper security controls, while also mapping to ATT&CK technique T1078.1.001 for valid accounts, as these accounts bypass normal authentication procedures through predetermined credentials.
The technical implementation of this vulnerability relies on vendor-specific password derivation mechanisms that utilize device-specific values as inputs to generate administrative credentials. This approach creates a predictable authentication system where an attacker who can reverse engineer the algorithm and obtain the necessary device-specific parameters can gain full administrative access to the web management interface. The mechanism essentially transforms what should be a secure, dynamic credential generation process into a deterministic system vulnerable to reverse engineering attacks. The use of device-specific values suggests that each device may have unique identifiers or serial numbers incorporated into the derivation function, but this complexity does not adequately protect against determined attackers who can potentially extract these values through various means including firmware analysis or network traffic inspection.
The operational impact of this vulnerability is severe and far-reaching for any organization using affected Autel Maxi Charger Single devices. Administrative access to the web management interface provides attackers with complete control over device configuration, operational parameters, and potentially sensitive data stored within the system. This access could enable unauthorized modifications to charging protocols, compromise device integrity, or serve as a foothold for lateral movement within networks where these devices are connected. The vulnerability affects not only individual device security but also poses risks to broader network infrastructure since these chargers may be part of larger IoT ecosystems or industrial control systems. Organizations relying on these devices for critical operations face potential operational disruptions, data compromise, and regulatory compliance issues.
Mitigation strategies should focus on immediate remediation through firmware updates provided by the vendor, as well as comprehensive security assessments of affected systems. Network segmentation should be implemented to isolate these devices from critical network segments, while monitoring should be deployed to detect unauthorized access attempts or unusual administrative activities. The device-specific password derivation mechanisms should be replaced with industry-standard secure credential management approaches that comply with NIST SP 800-63B guidelines for digital identity management. Organizations should also implement continuous vulnerability scanning and penetration testing procedures to identify similar issues in other embedded systems. Additionally, access controls should be reviewed to ensure that only authorized personnel have legitimate need for administrative privileges, and that proper audit logging is enabled to track all administrative activities on these devices.