SEPTEMBER 17, 2026
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Case File

CVE-2026-18685

CRITICAL · CVSS 9.8 EPSS 1.99% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-04 · Last synced 2026-09-03

CyberRota Analysis

AI-Generated

A critical command injection vulnerability exists in the GL.iNet GL-MT3000 router firmware versions up to 4.4.5, specifically within the set_upgrade function of the modem.so component. This flaw allows remote attackers to execute arbitrary commands on the device, posing a significant risk to network integrity and security. Organizations using affected devices should prioritize immediate updates to mitigate potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-18685
Severity
CRITICAL
CVSS
9.8
EPSS
1.99%

Original NVD Description

A security vulnerability has been detected in GL.iNet GL-MT3000 up to 4.4.5. Impacted is the function set_upgrade of the file /cgi-bin/glc of the component modem.so. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.