Quick answers
- Is CVE-2026-13307 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-13307 being exploited in the wild.
- How severe is CVE-2026-13307?
- Medium severity, with a CVSS score of 6.8, published 29 July 2026.
- Which products and versions are affected?
- Autel MaxiCharger AC Elite Home 1.39.51.
- Is there a fix for CVE-2026-13307?
- 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-2026-13307 attacked?
- It is attacked with physical access, in a network appliance.
- Am I affected by CVE-2026-13307?
- 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
A heap-based buffer overflow vulnerability (CWE-122) exists in the Autel MaxiCharger AC Elite Home EV charger firmware version 1.39.51. The flaw is located in the handling of custom USB packets, where the device fails to properly validate the length of user-supplied data before copying it into a fixed-length heap buffer. A physically present attacker can exploit this by sending specially crafted USB packets to the device. Successful exploitation allows for arbitrary code execution in the context of the device without requiring prior authentication. The issue is resolved 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 by ZDI
- 2026-07-29: other: NVD publication date