CVE-2024-48630 identifies a command injection vulnerability in D-Link DIR-882 (firmware version FW130B06) and DIR-878 (firmware version FW130B08) routers. The flaw exists in the SetMACFilters2 function, specifically through the MacAddress parameter, which fails to properly sanitize input. This allows an attacker with at least low-level privileges (PR:L) to craft a malicious POST request that injects arbitrary operating system commands. The vulnerability requires no user interaction (UI:N) and can be exploited remotely over the network (AV:A), making it accessible to attackers within the local network or via remote management interfaces if exposed. The CVSS 3.1 vector (AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) reflects that exploitation is relatively straightforward with low attack complexity and results in high impact on confidentiality, integrity, and availability. The vulnerability is classified under CWE-78 (Improper Neutralization of Special Elements used in an OS Command). Although no public exploits are currently known, the potential for full device compromise is significant, enabling attackers to execute arbitrary commands, potentially pivot within the network, intercept or manipulate traffic, or disrupt device operation. The absence of available patches at the time of disclosure increases the urgency for mitigation.

The vulnerability allows attackers to execute arbitrary OS commands on affected D-Link routers, leading to complete device compromise. This can result in unauthorized access to sensitive network traffic, manipulation or disruption of network services, and potential lateral movement within enterprise or home networks. Confidentiality is at high risk as attackers could intercept or redirect data. Integrity is compromised because attackers can alter device configurations or firmware. Availability is also threatened through potential denial-of-service conditions caused by malicious commands. Organizations relying on these router models for critical network infrastructure or internet access face significant operational risks, including data breaches, service outages, and loss of trust. The ease of exploitation combined with the high impact makes this a critical concern for network security.

1. Immediately restrict access to the router’s management interfaces, especially remote management, limiting it to trusted IP addresses or disabling it if not required. 2. Implement network segmentation to isolate affected routers from sensitive network segments, reducing the attack surface. 3. Monitor network traffic for unusual POST requests targeting MAC filter settings or other router management endpoints. 4. Apply any available firmware updates from D-Link as soon as they are released addressing this vulnerability. 5. If patches are not yet available, consider temporary mitigations such as disabling MAC filtering features or using alternative security controls. 6. Enforce strong authentication and change default credentials on all affected devices to prevent unauthorized access. 7. Conduct regular security audits and vulnerability scans on network devices to detect exploitation attempts. 8. Educate network administrators about this vulnerability and ensure incident response plans include steps for compromised routers.