CVE-2026-26213: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in themactep 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.
AI Analysis
Technical Summary
CVE-2026-26213 is an OS command injection vulnerability (CWE-78) in the themactep thingino-firmware versions up to 0. The vulnerability exists in the WiFi captive portal CGI script where unsanitized HTTP parameter names are passed to the eval function within parse_query() and parse_post() functions. This allows unauthenticated remote attackers to execute arbitrary commands with root privileges, leading to full device compromise including privileged configuration changes such as root password resets and SSH authorized_keys modifications.
Potential Impact
Successful exploitation results in remote code execution as root without authentication. Attackers can perform privileged configuration changes, including resetting the root password and modifying SSH authorized_keys, leading to full persistent compromise of the device.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided at this time. Until a patch is available, restrict access to the vulnerable captive portal interface if possible and monitor for unusual activity.
CVE-2026-26213: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in themactep thingino-firmware
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 v4.0
Score 8.7high
Affected software
pkg:github/themactep/thingino-firmwareRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-26213 is an OS command injection vulnerability (CWE-78) in the themactep thingino-firmware versions up to 0. The vulnerability exists in the WiFi captive portal CGI script where unsanitized HTTP parameter names are passed to the eval function within parse_query() and parse_post() functions. This allows unauthenticated remote attackers to execute arbitrary commands with root privileges, leading to full device compromise including privileged configuration changes such as root password resets and SSH authorized_keys modifications.
Potential Impact
Successful exploitation results in remote code execution as root without authentication. Attackers can perform privileged configuration changes, including resetting the root password and modifying SSH authorized_keys, leading to full persistent compromise of the device.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided at this time. Until a patch is available, restrict access to the vulnerable captive portal interface if possible and monitor for unusual activity.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-02-11T20:08:07.943Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69c589313c064ed76fb167b3
Added to database: 03/26/2026, 19:29:53 UTC
Last enriched: 07/15/2026, 11:07:56 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 153
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