What is CVE-2026-13309?

CVE-2026-13309 is a medium-severity vulnerability in Autel Maxicharger Ac Elite Home, classified under Stack-based Buffer Overflow. CVSS score: 6.8/10. Published 2026-07-29.

How severe is CVE-2026-13309?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Buffer overflow in Autel Maxicharger Ac Elite Home

CVE-2026-13309

Autel MaxiCharger AC Elite Home NFC Stack-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 specific flaw exists within the handling of card responses via the NFC interface. A crafted card response can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-29044.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (13.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:P/AC:L/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-121 — Stack-based Buffer Overflow

References

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

Frequently asked questions

What is CVE-2026-13309?: CVE-2026-13309 is a medium-severity vulnerability in Autel Maxicharger Ac Elite Home, classified under Stack-based Buffer Overflow. CVSS score: 6.8/10. Published 2026-07-29.
How severe is CVE-2026-13309?: Medium severity. CVSS v3 base score is 6.8 out of 10.