RCE in Themactep Thingino-Firmware
CVE-2026-26213
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.041 (90.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.062 · newest: 0.041 · change: -0.021
Affected products
- Themactep Thingino-Firmware — versions 0
- Thingino Firmware
Weakness classification (CWE)
References
- github.com/themactep/thingino-firmware/releases/tag/firmware-2026-03-15 (product, Release Notes)
- www.vulncheck.com/advisories/thingino-firmware-api-cgi-unauthenticated-command-… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-26213?
- CVE-2026-26213 is a critical-severity vulnerability in Themactep Thingino-Firmware, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-03-26.
- How severe is CVE-2026-26213?
- Critical severity. CVSS v3 base score is 9.8 out of 10.