A vulnerability was found in Bharti Airtel Xstream Fiber up to 20250123. It has been rated as problematic. This issue affects some unknown processing of the component WiFi Password Handler. The manipulation leads to use of weak credentials. The attack needs to be done within the local network. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. It is recommended to change the configuration settings. The vendor was contacted early about this disclosure but did not respond in any way.
The product uses weak credentials (such as a default key or hard-coded password) that can be calculated, derived, reused, or guessed by an attacker.
By design, authentication protocols try to ensure that attackers must perform brute force attacks if they do not know the credentials such as a key or password. However, when these credentials are easily predictable or even fixed (as with default or hard-coded passwords and keys), then the attacker can defeat the mechanism without relying on brute force. Credentials may be weak for different reasons, such as:
Even if a new, unique credential is intended to be generated for each product installation, if the generation is predictable, then that may also simplify guessing attacks.