CVE-2026-13308CWE-191

Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability

High · published July 29, 2026

CVSS v3.0
8.1
EPSS
1%
Percentile
55.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.0
8.1 · HIGH
Vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00779 · 55.4th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-07-29T20:14Z
EPSS history
Timeline
  • 29 JUL 20:14Z
    Autel MaxiCharger AC Elite Home WebSockets Integer Underflow Remote Code Execution Vulnerability
    cvelistv5