CVE-2014-0683 in CVR100W
Summary
by MITRE
The web management interface on the Cisco RV110W firewall with firmware 1.2.0.9 and earlier, RV215W router with firmware 1.1.0.5 and earlier, and CVR100W router with firmware 1.0.1.19 and earlier does not prevent replaying of modified authentication requests, which allows remote attackers to obtain administrative access by leveraging the ability to intercept requests, aka Bug IDs CSCul94527, CSCum86264, and CSCum86275.
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Analysis
by VulDB Data Team • 05/07/2026
The vulnerability described in CVE-2014-0683 affects Cisco RV110W firewalls, RV215W routers, and CVR100W routers running specific firmware versions. This security flaw resides within the web management interface of these network devices, creating a critical authentication bypass opportunity that enables remote attackers to gain administrative privileges without proper authorization. The vulnerability stems from insufficient protection mechanisms that fail to prevent replay attacks on modified authentication requests, fundamentally undermining the device's security posture and exposing sensitive network infrastructure to unauthorized access.
The technical flaw manifests through the absence of proper anti-replay mechanisms within the authentication process of these Cisco network devices. When legitimate authentication requests are intercepted, attackers can modify these requests and replay them to the device's web interface, effectively circumventing the normal authentication flow. This weakness is categorized as a replay attack vulnerability that operates under the Common Weakness Enumeration framework as CWE-347, specifically addressing improper certificate validation and weak cryptographic implementations that allow for authentication token manipulation. The vulnerability's impact is amplified by the fact that attackers need only intercept network traffic rather than possessing physical access or advanced technical skills beyond basic network monitoring capabilities.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it allows attackers to assume complete administrative control over the affected network devices. Once authenticated, malicious actors can modify firewall rules, change network configurations, access sensitive network data, and potentially establish persistent backdoors within the network infrastructure. This represents a critical compromise of network security that could lead to widespread data breaches, man-in-the-middle attacks, and complete network takeover. The vulnerability affects devices deployed in small to medium business environments where network security may be less robust, making these organizations particularly susceptible to exploitation. According to ATT&CK framework, this vulnerability maps to T1078.004 (Valid Accounts: Default Accounts) and T1566.001 (Phishing: Spearphishing Attachment) as attackers can leverage intercepted credentials to gain unauthorized access, while T1021.001 (Remote Services: Remote Desktop Protocol) and T1046 (Network Service Scanning) represent potential post-exploitation activities.
Mitigation strategies for CVE-2014-0683 require immediate firmware updates from Cisco to address the authentication replay vulnerability. Organizations should implement network segmentation to isolate critical devices from general network traffic, employ network monitoring solutions to detect unusual authentication patterns, and establish robust network access controls that limit administrative access to authorized personnel only. The implementation of secure communication protocols such as HTTPS with strong encryption and proper certificate validation should be enforced across all management interfaces. Additionally, organizations should conduct regular security assessments and vulnerability scans to identify potentially affected devices, while establishing incident response procedures to quickly address any exploitation attempts. Network administrators should also consider implementing multi-factor authentication mechanisms where available and ensure that all administrative interfaces are properly secured through access control lists and firewall rules that restrict access to trusted network segments only.