CVE-2026-18685
CRITICALGL.iNet GL-MT3000 modem.so glc set_upgrade command injection
Title source: cnaDescription
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.
References (5)
Core 5
Core References
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-385611 | GL.iNet GL-MT3000 modem.so glc set_upgrade command injection
https://vuldb.com/vuln/385611
Signature, Permissions Required signature
permissions-required
VDB-385611 | CTI Indicators (IOB, IOC, TTP, IOA)
https://vuldb.com/vuln/385611/cti
Third Party Advisory third-party-advisory
CVE-2026-18685 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-18685
Third Party Advisory third-party-advisory
Submit #851593 | GL.iNet MT3000 4.4.5 Command Injection
https://vuldb.com/submit/851593
Scores
CVSS v3
9.8
EPSS
0.0199
EPSS Percentile
78.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-74
CWE-77
Status
published
Products (6)
GL.iNet/GL-MT3000
4.4.0
GL.iNet/GL-MT3000
4.4.1
GL.iNet/GL-MT3000
4.4.2
GL.iNet/GL-MT3000
4.4.3
GL.iNet/GL-MT3000
4.4.4
GL.iNet/GL-MT3000
4.4.5
Published
Aug 04, 2026
Tracked Since
Aug 04, 2026