Vulnerability · Published Mar 26, 2026 · Assigned by VulnCheck

CVE-2026-26213thingino-firmware api.cgi Unauthenticated Command Injection in Captive Portal

High 8.7

In plain English

A high-severity OS command injection in thingino-firmware from themactep. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.7% (higher than 92% of all known vulnerabilities).

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)4.7%top 8.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
themactep	thingino-firmware	0 – through firmware-2026-03-16

Weakness: CWE-78 · 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

In plain English

Official description

Affected products (as reported)

References