CVE-2026-2882 is a stack-based buffer overflow vulnerability identified in the D-Link DWR-M960 router firmware version 1.01.07. The vulnerability resides in the function sub_46385C, specifically in the handling of the submit-url argument within the /boafrm/formDosCfg endpoint. By crafting a malicious request that manipulates this argument, an attacker can overflow the stack buffer, leading to potential arbitrary code execution. The vulnerability is remotely exploitable over the network without requiring authentication or user interaction, making it highly dangerous. The CVSS 4.0 base score is 8.7, reflecting its high severity, with metrics indicating network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. Although no confirmed exploits in the wild have been reported, the availability of public exploit code increases the likelihood of attacks. The vulnerability affects a specific firmware version, and no official patches have been linked yet, highlighting the urgency for users to seek vendor updates or implement mitigations. This flaw could allow attackers to take full control of the device, disrupt network operations, intercept or manipulate traffic, and pivot to internal networks.

The impact of CVE-2026-2882 is significant for organizations relying on the D-Link DWR-M960 router, particularly those running the vulnerable firmware version 1.01.07. Successful exploitation can lead to full device compromise, enabling attackers to execute arbitrary code with system-level privileges. This can result in unauthorized access to sensitive network data, disruption of network services, and potential lateral movement within internal networks. The confidentiality, integrity, and availability of network communications can be severely affected. For enterprises, this could mean data breaches, service outages, and loss of trust. For ISPs or managed service providers deploying these routers at scale, the risk multiplies, potentially affecting thousands of customers. The remote and unauthenticated nature of the exploit increases the threat surface, making it attractive for threat actors including cybercriminals and nation-state actors. The lack of patches at the time of disclosure further exacerbates the risk, necessitating immediate mitigation efforts.

To mitigate CVE-2026-2882, organizations should first verify if their D-Link DWR-M960 devices are running firmware version 1.01.07. If so, they should immediately check for any official firmware updates or patches from D-Link and apply them as soon as they become available. In the absence of patches, network administrators should restrict access to the router’s management interface by implementing network segmentation and firewall rules to block external access to the /boafrm/formDosCfg endpoint. Disabling remote management features or limiting management access to trusted IP addresses can reduce exposure. Monitoring network traffic for unusual requests targeting the submit-url parameter may help detect exploitation attempts. Additionally, consider deploying intrusion detection/prevention systems (IDS/IPS) with signatures tuned to detect exploitation attempts against this vulnerability. Regularly auditing device firmware versions and maintaining an inventory of network devices will aid in rapid response. Finally, organizations should prepare incident response plans specific to router compromises and educate staff on the risks associated with unpatched network infrastructure devices.