ZDI-26-433: (Pwn2Own) Autel MaxiCharger AC Elite Home Software Update Improper Verification of Cryptographic Signature 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 6.4. The following CVEs are assigned: CVE-2026-13305.
AI Analysis
Technical Summary
CVE-2026-13305 is a vulnerability in the Autel MaxiCharger AC Elite Home EV charger software update mechanism. The vulnerability arises from improper verification of the cryptographic signature on user-supplied software update images, allowing an attacker with physical access to execute arbitrary code on the device without requiring authentication. This flaw was reported to the vendor on 2026-03-19 and publicly disclosed on 2026-07-15. The issue is fixed in firmware version 1.40.81.
Potential Impact
An attacker with physical access to the affected EV charger can execute arbitrary code on the device without authentication. This could lead to full control over the device, potentially impacting device integrity, confidentiality, and availability. The CVSS score of 6.4 reflects a medium severity level with high impact on confidentiality, integrity, and availability but requiring physical access and high attack complexity.
Mitigation Recommendations
Upgrade the Autel MaxiCharger AC Elite Home EV charger firmware to version 1.40.81 or later, where this vulnerability has been fixed. Until the update is applied, restrict physical access to the device to trusted personnel only.
ZDI-26-433: (Pwn2Own) Autel MaxiCharger AC Elite Home Software Update Improper Verification of Cryptographic Signature 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 6.4. The following CVEs are assigned: CVE-2026-13305.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-13305 is a vulnerability in the Autel MaxiCharger AC Elite Home EV charger software update mechanism. The vulnerability arises from improper verification of the cryptographic signature on user-supplied software update images, allowing an attacker with physical access to execute arbitrary code on the device without requiring authentication. This flaw was reported to the vendor on 2026-03-19 and publicly disclosed on 2026-07-15. The issue is fixed in firmware version 1.40.81.
Potential Impact
An attacker with physical access to the affected EV charger can execute arbitrary code on the device without authentication. This could lead to full control over the device, potentially impacting device integrity, confidentiality, and availability. The CVSS score of 6.4 reflects a medium severity level with high impact on confidentiality, integrity, and availability but requiring physical access and high attack complexity.
Mitigation Recommendations
Upgrade the Autel MaxiCharger AC Elite Home EV charger firmware to version 1.40.81 or later, where this vulnerability has been fixed. Until the update is applied, restrict physical access to the device to trusted personnel only.
Technical Details
- Article Source
- {"url":"http://www.zerodayinitiative.com/advisories/ZDI-26-433/","fetched":true,"fetchedAt":"2026-07-16T15:50:49.627Z","wordCount":198}
- Classification
- {"confidence":0.95,"severitySource":"cvss-text","classifier":"rss-v2"}
Threat ID: 6a58fe6668715ace43485bdb
Added to database: 07/16/2026, 15:53:10 UTC
Last enriched: 08/07/2026, 06:03:18 UTC
Last updated: 08/30/2026, 10:52:07 UTC
Views: 129
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