What is CVE-2026-13308?

CVE-2026-13308 is a high-severity vulnerability in Autel Maxicharger Ac Elite Home, classified under Integer Underflow. CVSS score: 8.1/10. Published 2026-07-29.

How severe is CVE-2026-13308?

High severity. CVSS v3 base score is 8.1 out of 10.

Integer overflow in Autel Maxicharger Ac Elite Home

CVE-2026-13308

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.

EPSS: 0.006 (45.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Autel Maxicharger Ac Elite Home — versions 1.39.51

Weakness classification (CWE)

CWE-191 — Integer Underflow

References

zdi-disclosures@trendmicro.com (x_research-advisory)

Frequently asked questions

What is CVE-2026-13308?: CVE-2026-13308 is a high-severity vulnerability in Autel Maxicharger Ac Elite Home, classified under Integer Underflow. CVSS score: 8.1/10. Published 2026-07-29.
How severe is CVE-2026-13308?: High severity. CVSS v3 base score is 8.1 out of 10.