SB2025061127 - Multiple vulnerabilities in WOLFBOX Level 2 EV Charger

Description

This security bulletin contains information about 5 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2025-5747)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to insufficient validation of user-supplied input within the handling of command frames received by the MCU. A remote user on the local network can pass specially crafted input to the application and execute arbitrary code on the target system.

2) Use of hard-coded credentials (CVE-ID: CVE-2025-5751)

CWE-ID: CWE-798 - Use of Hard-coded Credentials

CVSSv4: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local attacker to gain access to vulnerable system.

The vulnerability exists due to presence of hard-coded credentials in application code. An attacker with physical access can gain access to the affected system using the hard-coded credentials.

3) Heap-based buffer overflow (CVE-ID: CVE-2025-5750)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the handling of the secKey, localKey, stdTimeZone and devId parameters. A remote attacker on the local network can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

4) Use of Uninitialized Variable (CVE-ID: CVE-2025-5749)

CWE-ID: CWE-457 - Use of Uninitialized Variable

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to bypass authentication.

The vulnerability exists due to use of uninitialized variable within the handling of cryptographic keys used in vendor-specific encrypted communications. A remote attacker on the local network can bypass authentication on the system.

5) Exposed dangerous method or function (CVE-ID: CVE-2025-5748)

CWE-ID: CWE-749 - Exposed Dangerous Method or Function

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to the exposure of a dangerous method within the Tuya communications module software. A remote user on the local network can execute arbitrary code on the target system.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://www.zerodayinitiative.com/advisories/ZDI-25-326/
• https://www.zerodayinitiative.com/advisories/ZDI-25-330/
• https://www.zerodayinitiative.com/advisories/ZDI-25-329/
• https://www.zerodayinitiative.com/advisories/ZDI-25-328/
• https://www.zerodayinitiative.com/advisories/ZDI-25-327/