CVE-2025-6983 is a medium-severity clickjacking vulnerability affecting the TP-Link Archer C1200 router, specifically versions up to and including 1.1.5. The vulnerability arises from improper restriction of rendered UI layers or frames (CWE-1021) on the router's web management interface. Clickjacking is a technique where an attacker tricks a user into clicking on something different from what the user perceives, potentially causing unintended actions such as changing router settings or exposing sensitive information. In this case, the attacker can craft a malicious webpage that overlays transparent or disguised frames over the router's management interface, inducing the user to unknowingly interact with the router's controls. The vulnerability requires no authentication or privileges and no prior user interaction other than visiting a malicious webpage, making it relatively easy to exploit remotely. The CVSS 4.0 base score is 5.1, reflecting network attack vector, low attack complexity, no privileges required, but requiring user interaction. The impact on confidentiality is limited, but integrity and availability could be affected if the attacker tricks the user into changing critical router configurations, such as DNS settings or firewall rules. No known exploits are currently reported in the wild, and no patches or mitigations have been officially released yet. The vulnerability is specific to the web management interface of the Archer C1200 router, a widely used consumer-grade device for home and small office networking.

For European organizations, especially small and medium enterprises (SMEs) and home offices relying on TP-Link Archer C1200 routers, this vulnerability poses a risk of unauthorized configuration changes leading to network compromise. Attackers could redirect traffic through malicious DNS servers, disable security features, or open ports to external threats, undermining network integrity and availability. While large enterprises may use more robust equipment, the widespread use of TP-Link devices in residential and small business environments in Europe means that attackers could leverage this vulnerability as a foothold for broader attacks or espionage. The requirement for user interaction (visiting a malicious webpage) means phishing campaigns or malicious advertisements could be vectors for exploitation. The vulnerability could also be leveraged in targeted attacks against specific users or organizations by tricking them into visiting crafted sites. The lack of authentication requirement increases the risk, as any user on the local network or visiting a malicious site can be targeted. However, the impact on confidentiality is limited as the attacker cannot directly extract sensitive data without further exploitation.

1. Network administrators and users should immediately restrict access to the router's web management interface by disabling remote management and limiting local network access to trusted devices only. 2. Employ browser security features such as X-Frame-Options or Content Security Policy (CSP) headers to prevent framing of the router's management interface, if configurable. 3. Educate users to avoid clicking on suspicious links or visiting untrusted websites, as user interaction is required for exploitation. 4. Monitor network traffic for unusual DNS queries or configuration changes that could indicate exploitation attempts. 5. Regularly check TP-Link's official channels for firmware updates or patches addressing this vulnerability and apply them promptly once available. 6. Consider replacing affected devices with models that have updated firmware or better security controls if patching is not feasible. 7. Use network segmentation to isolate critical systems from devices like routers that may be vulnerable to UI-based attacks. 8. Implement multi-factor authentication on router management interfaces if supported to reduce risk from UI manipulation.