CVE-2026-4840 is a high-severity OS command injection vulnerability affecting Netcore Power 15AX routers, specifically versions up to 3.0.0.6938. The flaw resides in the `setTools` function of the `/bin/netis.cgi` file within the Diagnostic Tool Interface. This allows an authenticated remote attacker to achieve arbitrary code execution by manipulating the `IpAddr` argument, leading to a complete compromise of the device with a CVSS score of 8.8 (High). A public exploit has been released, indicating a high potential for attacks, though active exploitation is not confirmed. The vendor has not responded to the disclosure, and no official patches are available, necessitating immediate mitigation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Netcore | Power 15AX | 3.0.0.6938CNA affected |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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