CVE-2024-32287 identifies a stack overflow vulnerability in the Tenda W30E router firmware version 1.0.1.25(633). The vulnerability arises from improper handling of the qos parameter within the fromqossetting function, leading to a stack-based buffer overflow (CWE-121). This flaw can be triggered remotely by an attacker without requiring any authentication or user interaction, as indicated by the CVSS vector (AV:A/AC:L/PR:N/UI:N). Exploiting this vulnerability does not compromise confidentiality or integrity but can cause the device to crash, resulting in denial of service (availability impact). The vulnerability is rated medium severity with a CVSS score of 6.5. Currently, there are no known exploits in the wild and no patches have been published. The lack of patches means affected devices remain vulnerable, and mitigation relies on network controls and monitoring. The stack overflow nature of the flaw suggests that crafted input to the qos parameter can overwrite the call stack, potentially destabilizing the device’s firmware execution. This vulnerability is significant because routers are critical network infrastructure components, and disruption can affect entire networks relying on these devices.

The primary impact of CVE-2024-32287 is a denial of service condition caused by the router crashing due to the stack overflow. This can disrupt network connectivity for users and organizations relying on the Tenda W30E router, potentially affecting business operations, communications, and internet access. Although the vulnerability does not allow for data theft or modification, the loss of availability can be critical in environments where continuous network uptime is essential, such as small businesses, home offices, or branch offices. The ease of remote exploitation without authentication increases the risk, especially if the device’s management interface or affected services are exposed to untrusted networks. The absence of known exploits in the wild reduces immediate risk but does not eliminate the threat, as attackers may develop exploits in the future. Organizations with large deployments of Tenda routers could face widespread outages if targeted. Additionally, denial of service attacks can be used as a distraction or part of a larger attack campaign.

1. Monitor Tenda’s official channels for firmware updates addressing CVE-2024-32287 and apply patches promptly once available. 2. Restrict remote access to the router’s management interfaces and services, ideally limiting access to trusted internal networks only. 3. Implement network segmentation to isolate critical systems from affected routers to minimize impact if a device is compromised or crashes. 4. Use firewall rules to block unauthorized traffic targeting the qos parameter or related services if possible. 5. Regularly audit network devices for firmware versions and replace or upgrade devices that cannot be patched. 6. Employ intrusion detection systems (IDS) or network monitoring tools to detect anomalous traffic patterns that may indicate exploitation attempts. 7. Educate network administrators about this vulnerability and encourage proactive security hygiene to reduce exposure. 8. Consider deploying redundant network paths or failover mechanisms to maintain availability in case of router failure.