CVE-2026-1505 in DIR-615
Summary
by MITRE • 01/28/2026
A vulnerability was found in D-Link DIR-615 4.10. This issue affects some unknown processing of the file /set_temp_nodes.php of the component URL Filter. The manipulation results in os command injection. The attack can be executed remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.
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Analysis
by VulDB Data Team • 01/29/2026
The vulnerability identified as CVE-2026-1505 represents a critical os command injection flaw within the D-Link DIR-615 router firmware version 4.10. This issue resides in the URL Filter component and specifically targets the /set_temp_nodes.php file which processes user-supplied input without proper sanitization. The vulnerability stems from inadequate input validation mechanisms that fail to properly escape or filter special characters that could be interpreted as shell commands by the underlying operating system. This flaw allows remote attackers to execute arbitrary operating system commands on the affected device with the privileges of the web server process, potentially enabling full system compromise and unauthorized access to network resources.
The technical exploitation of this vulnerability occurs through remote manipulation of the URL Filter functionality, where attackers can craft malicious input parameters that are directly passed to system commands without proper sanitization. This type of vulnerability maps directly to CWE-77 which describes improper neutralization of special elements used in OS commands, and aligns with ATT&CK technique T1059.001 for command and scripting interpreter. The attack vector requires no authentication for exploitation, making it particularly dangerous as it can be leveraged by remote unauthenticated actors to gain unauthorized control over the network infrastructure. The exploitation process typically involves injecting shell metacharacters such as semicolons, pipes, or other command delimiters that bypass the intended input validation and result in arbitrary code execution on the target device.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass complete network compromise and potential data exfiltration capabilities. An attacker who successfully exploits this vulnerability can gain persistent access to the router's operating system, potentially enabling them to modify network configurations, establish backdoors, monitor network traffic, or use the device as a pivot point for attacking other systems within the local network. The affected D-Link DIR-615 router model represents a consumer-grade device that typically lacks robust security features and may be deployed in environments where network segmentation is minimal, amplifying the potential damage. The vulnerability's exploitation could result in man-in-the-middle attacks, DNS poisoning, or other advanced persistent threats that leverage the compromised router as a foothold for broader network infiltration.
Given that this vulnerability affects a product that is no longer supported by the maintainer, users face significant challenges in obtaining official patches or security updates. The lack of vendor support means that the device will not receive any future security fixes, leaving it permanently vulnerable to exploitation. Organizations and individuals using this router should consider immediate hardware replacement as the primary mitigation strategy, as no reliable software-based solutions exist for this specific vulnerability. Network segmentation and firewall rules can provide some protection by limiting access to the affected device, but these measures do not eliminate the underlying vulnerability. The public availability of exploitation tools further compounds the risk, as it lowers the barrier to entry for potential attackers and increases the probability of widespread exploitation across vulnerable networks. Security professionals should prioritize identifying and isolating all affected devices within their networks while implementing monitoring solutions to detect potential exploitation attempts.