ZDI-26-436: (Pwn2Own) Autel MaxiCharger AC Elite Home USB Heap-based Buffer Overflow Arbitrary Code Execution Vulnerability
This vulnerability allows physically present 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 6.8. The following CVEs are assigned: CVE-2026-13307.
AI Analysis
Technical Summary
CVE-2026-13307 is a heap-based buffer overflow vulnerability in the Autel MaxiCharger AC Elite Home EV charger. It arises from insufficient validation of the length of user-supplied data before copying it into a fixed-length heap buffer during custom USB packet processing. Exploitation requires physical presence but no authentication, enabling arbitrary code execution on the device. The vulnerability was reported to the vendor on 2026-03-19 and publicly disclosed on 2026-07-15. The issue is resolved in firmware version 1.40.81.
Potential Impact
An attacker with physical access can exploit this vulnerability to execute arbitrary code on the affected device, potentially compromising the device's confidentiality, integrity, and availability. No authentication is required, increasing the risk if physical access is possible. The CVSS score assigned is 6.8 (medium severity), reflecting the significant impact but limited attack vector.
Mitigation Recommendations
Upgrade the Autel MaxiCharger AC Elite Home EV charger firmware to version 1.40.81 or later, where this vulnerability is fixed. No other mitigations are indicated or necessary once the firmware is updated.
ZDI-26-436: (Pwn2Own) Autel MaxiCharger AC Elite Home USB Heap-based Buffer Overflow Arbitrary Code Execution Vulnerability
Description
This vulnerability allows physically present 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 6.8. The following CVEs are assigned: CVE-2026-13307.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-13307 is a heap-based buffer overflow vulnerability in the Autel MaxiCharger AC Elite Home EV charger. It arises from insufficient validation of the length of user-supplied data before copying it into a fixed-length heap buffer during custom USB packet processing. Exploitation requires physical presence but no authentication, enabling arbitrary code execution on the device. The vulnerability was reported to the vendor on 2026-03-19 and publicly disclosed on 2026-07-15. The issue is resolved in firmware version 1.40.81.
Potential Impact
An attacker with physical access can exploit this vulnerability to execute arbitrary code on the affected device, potentially compromising the device's confidentiality, integrity, and availability. No authentication is required, increasing the risk if physical access is possible. The CVSS score assigned is 6.8 (medium severity), reflecting the significant impact but limited attack vector.
Mitigation Recommendations
Upgrade the Autel MaxiCharger AC Elite Home EV charger firmware to version 1.40.81 or later, where this vulnerability is fixed. No other mitigations are indicated or necessary once the firmware is updated.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-436/","fetched":true,"fetchedAt":"2026-07-16T15:50:43.996Z","wordCount":197}
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
Threat ID: 6a58fe6468715ace43485b5b
Added to database: 07/16/2026, 15:53:08 UTC
Last enriched: 08/07/2026, 06:02:48 UTC
Last updated: 08/30/2026, 22:52:08 UTC
Views: 78
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