A security vulnerability has been identified in the CP Plus CP-XR-DE21-S Router, which could potentially expose sensitive user information and compromise system integrity. This CP Plus Router vulnerability, categorized under the CERT-In Vulnerability Note CIVN-2025-0005, was disclosed on January 20, 2025.
Its severity rating is classified as “HIGH,” indicating the critical nature of the threat. The vulnerability, which affects the router’s firmware version DE21_S_india_hx806_1.057.043_0023, poses a risk to both home users and small-office administrators relying on CP Plus for their 4G LTE connectivity.
The CP Plus Router Vulnerability
The CP Plus router vulnerability stems from a security misconfiguration in its web interface. Specifically, it involves insecure handling of cookie flags, which could allow an attacker to hijack an HTTP session. This flaw could be exploited by a remote attacker who intercepts data transmissions during an HTTP session. The attacker could then potentially access sensitive information, compromise the targeted device, and escalate the attack to manipulate the router’s settings or steal confidential data.
The issue is linked to a sensitive cookie in an HTTPS session that lacks the “Secure” attribute, a problem that falls under the Common Weakness Enumeration (CWE-614). This misconfiguration exposes the router to risks like Session Hijacking or Man-in-the-Middle (MITM) attacks, where attackers intercept and alter communications between the user and the system.
Impact and Risk Assessment
The vulnerability in CP Plus Router has the potential to severely impact the confidentiality, integrity, and availability of the targeted device. Should an attacker successfully exploit the vulnerability, they could gain unauthorized access to critical data stored within the router, such as user credentials, network configurations, and other sensitive network-related information. Furthermore, an attacker could alter these settings to disrupt the router’s operations or even gain control over connected devices.
Since the CP Plus CP-XR-DE21-S Router is commonly used in both home and small-office environments, the implications of this vulnerability are far-reaching. Unauthorized access could lead to the theft of personal or corporate data, loss of service, and extensive damage to the security of the network.
Discovery and Acknowledgment
This critical vulnerability was reported by security researchers Shravan Singh and Karan Patel. Their research revealed the insecure handling of cookie flags, which ultimately exposed the router to the described security risks. The vulnerability has been assigned the identifier CVE-2025-0479 in the Common Vulnerabilities and Exposures (CVE) system.
Despite the discovery, there is currently no public proof-of-concept (PoC) available, nor is there evidence of the vulnerability being actively exploited in the wild. However, this should not diminish the severity of the threat, and users of CP Plus Routers should take immediate steps to mitigate any potential risks until a patch is released.
Mitigation and Recommendations
As of the disclosure date, no official patch has been released to address the CP Plus Router vulnerability. Users and administrators of affected routers are advised to follow several key security practices to mitigate the risks associated with this vulnerability.
- Restrict access to the router’s web interface to trusted networks only. This will reduce the chances of an external attacker exploiting the vulnerability.
- Employ a VPN or another secure method to connect remotely to the router’s web interface, ensuring that the data transmission remains encrypted.
- Regularly check the router’s logs for unusual activities or signs of exploitation.
- If the router’s web interface is not essential for daily operations, consider disabling it altogether to eliminate one attack vector.
- Implement network segmentation to isolate the CP Plus Router from more critical systems within the network, limiting the potential damage in case of an exploit.
- Educate users about the risks of accessing the router’s interface from untrusted networks, such as public Wi-Fi.
Conclusion
The CP Plus Router vulnerability highlights the critical need for proper security configurations, especially when handling sensitive data within network devices. Until a formal patch is made available, users must remain proactive in securing their devices, while the security community continues to monitor the situation closely. Any updates or patches from CP Plus will be essential in addressing this high-severity risk. As connected devices become increasingly integral to daily life, it is crucial for users of the CP Plus CP-XR-DE21-S Router to prioritize addressing this vulnerability and implementing appropriate mitigation measures to protect their systems.
