Autel MaxiCharger AC Wallbox Commercial: Security Version Number Mutable to Older Versions
CVE-2025-5825 is a high-severity security version number mutable to older versions vulnerability in Autel MaxiCharger AC Wallbox Commercial from Autel, with a CVSS 3.0 base score of 7.5 out of 10. It can be exploited from the same local network by an unauthenticated attacker, without any action from a user. Affected Autel MaxiCharger AC Wallbox Commercial versions: 1.36.00. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.28% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Maxicharger Ac Elite Business C50 Firmware to 1.39.51 or 1.56.51, whichever matches your release line, or a later version.
- Update Maxicharger Ac Pro Firmware to 1.39.51 or 1.56.51, whichever matches your release line, or a later version.
- Update Maxicharger Ac Ultra Firmware to 1.39.51 or 1.56.51, whichever matches your release line, or a later version.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Autel | Autel MaxiCharger AC Wallbox Commercial | 1.36.00 | Not stated |
| Autel | Maxicharger Ac Elite Business C50 Firmware | before 1.39.51; before 1.56.51 | 1.39.51, 1.56.51 |
| Autel | Maxicharger Ac Pro Firmware | before 1.39.51; before 1.56.51 | 1.39.51, 1.56.51 |
| Autel | Maxicharger Ac Ultra Firmware | before 1.39.51; before 1.56.51 | 1.39.51, 1.56.51 |
| Autel | Maxicharger Dc Compact Mobile Firmware | before 1.39.51; before 1.56.51 | 1.39.51, 1.56.51 |
| Autel | Maxicharger Dc Compact Pedestal Firmware | before 1.39.51; before 1.56.51 | 1.39.51, 1.56.51 |
| Autel | Maxicharger Dc Fast Firmware | before 1.39.51; before 1.56.51 | 1.39.51, 1.56.51 |
| Autel | Maxicharger Dc Hipower Firmware | before 1.39.51; before 1.56.51 | 1.39.51, 1.56.51 |
| Autel | Maxicharger Dh480 Firmware | before 1.39.51; before 1.56.51 | 1.39.51, 1.56.51 |
| Autel | Maxicharger Single Charger Firmware | before 1.39.51; before 1.56.51 | 1.39.51, 1.56.51 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- AdjacentThe attacker must be on the same local network segment.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (trendmicro.com).
Official description
Autel MaxiCharger AC Wallbox Commercial Firmware Downgrade Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Autel MaxiCharger AC Wallbox Commercial charging stations. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability. The specific flaw exists within the firmware update process. The issue results from the lack of proper validation of a firmware image before using it to perform an upgrade. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the device. Was ZDI-CAN-26354.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Security Version Number Mutable to Older Versions
The security version number in the hardware product is mutable, resulting in the ability to downgrade (roll-back) the boot firmware to vulnerable code versions.
How developers prevent this class of flaw
- The security version number must be stored securely and persistently across power-on resets. When architecting the system, security version data should be designated for storage in registers that are either read-only or have access controls that prevent modification by an untrusted agent.
- During implementation and test, security version data should be demonstrated to be read-only and access controls should be validated.
More Security Version Number Mutable to Older Versions vulnerabilities (CWE-1328)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- zerodayinitiative.com/advisories/ZDI-25-344/Third Party Advisory
Other vulnerabilities in Autel MaxiCharger AC Wallbox Commercial
- 7.5 High severity
- 8.8 High severity
- 8.8 High severity
- 7.5 High severity
- 8.8 High severity
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