Overview
The cybersecurity vulnerability CVE-2025-52364 is a serious flaw in Tenda CP3 Pro Firmware V22.5.4.93. This vulnerability, characterized by insecure permissions, affects users of this firmware by allowing the telnet service to run by default at boot. It poses significant cybersecurity risks as it potentially allows unauthorized remote attackers to gain access to the device’s shell over the network, especially if default or weak credentials are used.
Vulnerability Summary
CVE ID: CVE-2025-52364
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Tenda CP3 Pro Firmware | V22.5.4.93
How the Exploit Works
The exploit takes advantage of the telnet service (telnetd) that is initiated by default at boot via the initialization script /etc/init.d/eth.sh. This insecure permission setting can allow a remote attacker to connect to the device’s shell over the network, potentially without any authentication if default or weak credentials are present.
Conceptual Example Code
This is a conceptual example of how an attacker could potentially take advantage of this vulnerability using a telnet client:
$ telnet target_device_ip
Trying target_device_ip...
Connected to target_device_ip.
Escape character is '^]'.
login: admin
password: admin
# Successful login without any authentication due to insecure permissionPlease note that this is a conceptual representation and that actual exploitation would depend on many factors including network configuration, firewall settings, and the presence of default or weak credentials.
