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Vulnerabilities CVE-2026-18685

CVE-2026-18685

Critical
Open
TLP:CLEAR

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

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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.

Details

CVSS Score
9.3
EPSS Score
1.99%

78.9th percentile

CVSS Vector
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
Confidence
90%
Published
Aug 3, 2026
Last Modified
Aug 4, 2026
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