Critical 9.8Published Aug 3, 2026

CVE-2026-18685GL.iNet GL-MT3000 modem.so glc set_upgrade command injection

Updated under an hour ago (Oct 26, 2026, 10:00 PM ET)

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It affects GL.iNet GL-MT3000. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for GL.iNet GL-MT3000

Exploited in the last 30 days

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: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
Weakness (CWE): CWE-77, CWE-74
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Aug 4, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

GL.iNet GL-MT3000 gl-inet:gl-mt3000_firmware	4.4.0; 4.4.1; 4.4.2; 4.4.3; 4.4.4; 4.4.5	CNA record

References

References

https://vuldb.com/vuln/385611	vdb-entry, technical-description
https://vuldb.com/vuln/385611/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-18685	third-party-advisory
https://vuldb.com/submit/851593	third-party-advisory
https://github.com/StrTzz123/iot_vul/tree/main/GL-iNet/MT3000/4.4.5/modem_set_upgrade_glc_rce	exploit, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.