CVE-2025-69764 is a stack-based buffer overflow vulnerability identified in the Tenda AX3 router firmware version 16.03.12.11. The vulnerability exists in the formGetIptv function, which improperly handles the stbpvid stack buffer. This improper handling can lead to memory corruption, which attackers may leverage to execute arbitrary code remotely on the affected device. The vulnerability does not require authentication or user interaction, increasing its risk profile. The absence of a CVSS score suggests that the vulnerability is newly published and pending further analysis, but the technical details indicate a high-risk flaw due to its potential for remote code execution. No patches or known exploits are currently reported, but the presence of such a vulnerability in a widely used consumer and small business router model poses a significant threat. The exploitation could allow attackers to gain full control over the router, manipulate network traffic, intercept communications, or pivot into internal networks. The vulnerability's presence in the IPTV-related function suggests that attackers might exploit IPTV service configurations or requests to trigger the overflow. Given the critical role routers play in network security and connectivity, this vulnerability demands immediate attention from network administrators and security teams.

The impact of CVE-2025-69764 on European organizations could be severe. Successful exploitation would allow remote attackers to execute arbitrary code on Tenda AX3 routers, potentially leading to full device compromise. This could result in interception or manipulation of network traffic, disruption of internet connectivity, and unauthorized access to internal networks. Organizations relying on these routers for IPTV services or general network routing could face service outages or data breaches. The vulnerability could be exploited to establish persistent backdoors, enabling long-term espionage or sabotage. Critical infrastructure providers, enterprises, and ISPs using Tenda AX3 routers are particularly at risk. The lack of authentication requirements lowers the barrier for attackers, increasing the likelihood of exploitation. Additionally, the memory corruption could cause device instability or denial of service, impacting availability. European organizations with limited patch management capabilities or those unaware of this vulnerability may be disproportionately affected. The threat also extends to home users and small businesses, which could serve as entry points for broader attacks targeting larger networks.

To mitigate CVE-2025-69764, European organizations should first identify all Tenda AX3 routers running firmware version 16.03.12.11 or earlier. Since no official patches are currently available, organizations should monitor Tenda's official channels for firmware updates addressing this vulnerability and apply them immediately upon release. In the interim, network segmentation should be enforced to isolate vulnerable routers from critical infrastructure and sensitive data. Disable or restrict IPTV-related services or features if not in use, reducing the attack surface. Implement strict firewall rules to limit inbound traffic to router management interfaces and IPTV service ports, ideally allowing only trusted IP addresses. Employ network intrusion detection and prevention systems (IDS/IPS) to monitor for anomalous traffic patterns indicative of exploitation attempts targeting the formGetIptv function. Regularly audit router configurations and logs for signs of compromise. Educate IT staff and end-users about the risks and signs of router exploitation. Consider deploying alternative, more secure networking equipment if immediate patching is not feasible. Finally, maintain robust backup and recovery procedures to restore network functionality in case of compromise.