EUVD-2026-16293CVSS Vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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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Description
thingino-firmware versions up to the firmware-2026-03-16 release contains an unauthenticated os command injection vulnerability in the WiFi captive portal CGI script that allows remote attackers to execute arbitrary commands as root by injecting malicious code through unsanitized HTTP parameter names. Attackers can exploit the eval function in parse_query() and parse_post() functions to achieve remote code execution and perform privileged configuration changes including root password reset and SSH authorized_keys modification, resulting in full persistent device compromise.
Analysis
Unauthenticated remote code execution as root is possible in thingino-firmware through the WiFi captive portal CGI script due to command injection in query and POST parameter parsing. Attackers on the adjacent network (AV:A) can inject arbitrary commands through unsanitized HTTP parameter names, enabling full device takeover including root password reset and SSH key manipulation for persistent access. …
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Remediation
Within 24 hours: Inventory all deployed thingino-firmware devices and document network placement relative to untrusted wireless zones; disable the captive portal feature if operationally feasible. Within 7 days: Isolate thingino devices to a segregated network segment with egress filtering and apply intrusion detection rules to monitor for parameter injection attempts against CGI endpoints. …
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