ZDI-26-437: (Pwn2Own) Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Autel MaxiCharger AC Elite Home EV chargers. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.1. The following CVEs are assigned: CVE-2026-13308.
AI Analysis
Technical Summary
The Autel MaxiCharger AC Elite Home EV charger contains a vulnerability (CVE-2026-13308) in its WebSocket handling for the OCPP service. The issue arises from improper validation of user-supplied data, leading to an integer underflow before buffer allocation. This can be exploited remotely without authentication to execute arbitrary code on the device. The vulnerability has a CVSS score of 8.1 and is fixed in firmware version 1.40.81.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code on the affected EV charger devices without requiring authentication. This could lead to full compromise of the device, impacting confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade the Autel MaxiCharger AC Elite Home firmware to version 1.40.81 or later, where this vulnerability is fixed. No other mitigations are indicated by the vendor advisory.
ZDI-26-437: (Pwn2Own) Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability
Description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Autel MaxiCharger AC Elite Home EV chargers. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 8.1. The following CVEs are assigned: CVE-2026-13308.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Autel MaxiCharger AC Elite Home EV charger contains a vulnerability (CVE-2026-13308) in its WebSocket handling for the OCPP service. The issue arises from improper validation of user-supplied data, leading to an integer underflow before buffer allocation. This can be exploited remotely without authentication to execute arbitrary code on the device. The vulnerability has a CVSS score of 8.1 and is fixed in firmware version 1.40.81.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary code on the affected EV charger devices without requiring authentication. This could lead to full compromise of the device, impacting confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade the Autel MaxiCharger AC Elite Home firmware to version 1.40.81 or later, where this vulnerability is fixed. No other mitigations are indicated by the vendor advisory.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-437/","fetched":true,"fetchedAt":"2026-07-16T15:50:41.094Z","wordCount":198}
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
Threat ID: 6a58fe6468715ace43485b58
Added to database: 07/16/2026, 15:53:08 UTC
Last enriched: 08/07/2026, 06:02:39 UTC
Last updated: 08/30/2026, 10:52:07 UTC
Views: 118
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