Vulnerability · Published Jul 29, 2026 · Assigned by zdi

CVE-2026-13308Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability

High 8.1

In plain English

A high-severity security flaw in MaxiCharger AC Elite Home from Autel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).

Severity (CVSS 3.0)8.1High

Exploit odds (30 days)0.8%top 43.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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 specific flaw exists within the handling of WebSocket messages related to the OCPP service. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-29113.

Affected products (as reported)

Vendor	Product	Versions
Autel	MaxiCharger AC Elite Home	1.39.51

Weakness: CWE-191 · Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ZDI-26-437 x_research-advisory