CVE-2026-2929 is a stack-based buffer overflow vulnerability identified in the D-Link DWR-M960 wireless router, firmware version 1.01.07. The vulnerability resides in the Wireless Access Control Endpoint, specifically in the function sub_453140 located in the /boafrm/formWlAc file. The issue arises when the submit-url argument is manipulated, causing a stack-based buffer overflow. This type of vulnerability can lead to arbitrary code execution, allowing remote attackers to potentially take full control of the affected device. The vulnerability is remotely exploitable without requiring authentication or user interaction, significantly increasing its risk profile. The CVSS 4.0 base score is 8.7, reflecting high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. Although no active exploitation has been reported in the wild, a public exploit is available, which could facilitate attacks by malicious actors. The DWR-M960 is a wireless router commonly used in enterprise and consumer environments, making this vulnerability relevant for a broad range of users. The lack of an official patch at the time of disclosure necessitates immediate mitigation efforts to reduce exposure. This vulnerability could be leveraged to disrupt network operations, intercept or manipulate network traffic, or establish persistent unauthorized access within targeted networks.

The impact of CVE-2026-2929 is significant for organizations relying on the D-Link DWR-M960 router. Successful exploitation can lead to remote code execution, enabling attackers to gain full control over the device. This compromises the confidentiality of network traffic, integrity of network configurations, and availability of network services. Attackers could use the compromised router as a pivot point to infiltrate internal networks, exfiltrate sensitive data, or launch further attacks such as man-in-the-middle or denial-of-service. The vulnerability's remote and unauthenticated nature means that attackers can exploit it from anywhere, increasing the attack surface. Enterprises, ISPs, and critical infrastructure operators using this device may face operational disruptions, data breaches, and reputational damage. The public disclosure of an exploit increases the likelihood of exploitation attempts, especially by opportunistic attackers and automated scanning tools. Without timely mitigation, the vulnerability poses a high risk to network security and stability.

1. Immediate mitigation should focus on isolating affected DWR-M960 devices from untrusted networks to reduce exposure. 2. Monitor network traffic for unusual patterns or signs of exploitation attempts targeting the /boafrm/formWlAc endpoint. 3. Disable or restrict access to the Wireless Access Control Endpoint interface from external networks, using firewall rules or access control lists. 4. Implement network segmentation to limit the impact of a compromised router on critical systems. 5. Regularly back up router configurations and maintain an inventory of affected devices for rapid response. 6. Engage with D-Link support channels to obtain firmware updates or patches as soon as they become available. 7. If patching is delayed, consider deploying intrusion detection/prevention systems (IDS/IPS) with signatures targeting this vulnerability's exploit patterns. 8. Educate network administrators about the vulnerability and ensure they follow secure configuration best practices, such as changing default credentials and disabling unnecessary services. 9. Conduct vulnerability scans and penetration tests focused on this device to identify exposure and validate mitigation effectiveness. 10. Plan for device replacement if long-term patch support is unavailable.