CVE-2026-2152 Overview
CVE-2026-2152 is an operating system command injection vulnerability in the D-Link DIR-615 router running firmware version 4.10. The flaw resides in the adv_routing.php file within the Web Configuration Interface. Attackers can manipulate the dest_ip, submask, or gw parameters to inject arbitrary operating system commands. The vulnerability is exploitable remotely over the network and a public exploit has been disclosed. D-Link has confirmed the DIR-615 4.10 product line is end-of-life and will not receive a fix from the maintainer [CWE-78].
Critical Impact
Authenticated remote attackers can execute arbitrary operating system commands on affected D-Link DIR-615 routers, leading to full device compromise on unsupported hardware that will not be patched.
Affected Products
- D-Link DIR-615 router (hardware)
- D-Link DIR-615 firmware version 4.10
- All deployments of the DIR-615 4.10 Web Configuration Interface
Discovery Timeline
- 2026-02-08 - CVE-2026-2152 published to the National Vulnerability Database
- 2026-02-11 - Last updated in NVD database
Technical Details for CVE-2026-2152
Vulnerability Analysis
The vulnerability exists in the advanced routing configuration handler exposed by adv_routing.php in the DIR-615 Web Configuration Interface. The script accepts user-supplied route configuration values through the dest_ip, submask, and gw HTTP request parameters. These parameters are passed to underlying shell utilities without proper sanitization or argument escaping. An authenticated attacker who reaches the router's web interface can append shell metacharacters to any of these parameters to execute arbitrary commands as the web server process, which typically runs with root privileges on embedded D-Link devices. Because the DIR-615 4.10 is no longer supported, no vendor patch will be issued and exposed devices remain permanently vulnerable.
Root Cause
The root cause is improper neutralization of special elements used in an operating system command [CWE-77, CWE-78]. Routing parameters submitted through the web interface are concatenated into shell command strings invoked to update the device's routing table. The application performs no validation that values conform to IPv4 address syntax and does not escape shell metacharacters such as ;, |, or backticks.
Attack Vector
Exploitation requires network access to the router's administrative interface and valid administrative credentials. An attacker submits a crafted HTTP request to adv_routing.php with a malicious payload in one of the affected parameters. The exploitation technique has been published, lowering the barrier for opportunistic attacks against exposed DIR-615 devices. Routers with internet-exposed management interfaces or weak default credentials face the greatest risk.
No verified public exploit code is included here. Technical analysis of the parameter handling is available in the third-party DIR-615 Routing Command Injection writeup and the VulDB entry #344854.
Detection Methods for CVE-2026-2152
Indicators of Compromise
- HTTP POST or GET requests to /adv_routing.php containing shell metacharacters such as ;, &&, |, or backticks in the dest_ip, submask, or gw parameters
- Outbound connections from the router to unexpected hosts shortly after administrative interface access
- Unexpected modifications to the device routing table or new processes spawned by the web server account
Detection Strategies
- Inspect web server and reverse proxy logs for requests targeting adv_routing.php with non-IPv4 characters in routing parameters
- Monitor network traffic for unauthorized access attempts against router administrative interfaces (TCP/80, TCP/443)
- Correlate authentication events on the DIR-615 with subsequent administrative configuration changes from unfamiliar source addresses
Monitoring Recommendations
- Deploy network detection rules that alert on HTTP parameters containing shell metacharacters destined for SOHO router management interfaces
- Track EPSS scoring trends for CVE-2026-2152 — current EPSS percentile indicates above-average exploitation likelihood relative to other CVEs
- Audit external attack surface for any DIR-615 devices with internet-exposed administration pages
How to Mitigate CVE-2026-2152
Immediate Actions Required
- Replace affected D-Link DIR-615 4.10 devices with a currently supported router. The product is end-of-life and will not receive a security patch from D-Link.
- Remove the router's administrative interface from any internet-exposed network segment until replacement is complete
- Rotate administrative credentials and disable remote management features on the device
- Restrict management plane access to a dedicated administrative VLAN or trusted source addresses only
Patch Information
No patch is available. D-Link has designated the DIR-615 4.10 as end-of-life, and the vendor has stated this vulnerability only affects products that are no longer supported by the maintainer. Refer to D-Link Security Resources for end-of-life guidance and supported replacement models.
Workarounds
- Disable the web configuration interface on untrusted network segments and rely on local-only administration where possible
- Place affected routers behind a perimeter firewall that filters inbound HTTP/HTTPS traffic to the management interface
- Enforce strong, unique administrative credentials to raise the bar against remote exploitation that requires high privileges
- Segment the router from sensitive internal assets so a compromised device cannot pivot to higher-value systems
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
