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CVE-2026-18685criticalCWE-74CWE-77

GL.iNet GL-MT3000 modem.so glc set_upgrade command injection

45Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.3
exploitation probability
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
Affected products
GL.iNet · GL-MT3000
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.