CVE-2026-26213CWE-78

thingino-firmware api.cgi Unauthenticated Command Injection in Captive Portal

High · published March 26, 2026

CVSS v4.0
8.7
EPSS
4%
Percentile
90.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
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
EPSS
0.04148 · 90.8th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-03-26T19:00Z
EPSS history
Timeline
  • 26 MAR 19:00Z
    thingino-firmware api.cgi Unauthenticated Command Injection in Captive Portal
    cvelistv5