Quick answers
- Is CVE-2026-13308 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-13308 being exploited in the wild.
- How severe is CVE-2026-13308?
- High severity, with a CVSS score of 8.1, published 29 July 2026.
- Which products and versions are affected?
- Autel MaxiCharger AC Elite Home 1.39.51.
- Is there a fix for CVE-2026-13308?
- A patch was published on 2026-07-15: Fixed in firmware version V1.40.81 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-13308 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-13308?
- Check whether you run Autel MaxiCharger AC Elite Home at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An integer underflow vulnerability exists in the Autel MaxiCharger AC Elite Home EV charger within the handling of WebSocket messages for the Open Charge Point Protocol (OCPP) service. The flaw is caused by a lack of proper validation of user-supplied data, which leads to an integer underflow during buffer allocation. A remote, unauthenticated attacker can exploit this to achieve arbitrary code execution in the context of the device. The vulnerability is addressed in firmware version V1.40.81.
Affected products
- Autel MaxiCharger AC Elite Home 1.39.51
Timeline
- 2026-03-19: disclosed: Vulnerability reported to vendor
- 2026-07-15: patched: Fixed in firmware version V1.40.81
- 2026-07-15: advisory: Coordinated public release of advisory