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Vulnerability record · CVE-2026-26213 · published 26 March 2026

CVE-2026-26213: Thingino firmware os command injection vulnerability

TThingino · Thingino Firmware

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.

8.7 CVSS 4.0 High EPSS 4.1% · top 9.5% CWE-78 · OS command injection
8.7CVSS 4.0 base score
4.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
14 Jul 2026Last modified by NVD

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.

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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/themactep/thingino-firmware/releases/tag/firmware-2026-03-15 Release Notes
https://www.vulncheck.com/advisories/thingino-firmware-api-cgi-unauthenticated-command-injection-in-captive-portal Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-26213), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.