CVE-2026-18685: critical vulnerability in GL.iNet GL-MT3000
GL.iNet GL-MT3000 modem.so glc set_upgrade command injection
Published · Updated
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48Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 9.3epss 3.6%
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-MT3000public PoCs found — 1
cve_referencegithub.com/StrTzz123/iot_vul/tree/main/GL-iNet/MT3000/4.4.5/modem_set_upgrade_glc_rceunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — GL.iNet GL-MT3000
In the same product, most dangerous first.
CVE-2026-18686CRITICALGL.iNet GL-MT3000 nas-web RPC Wrapper glc nas-web.add_user command injectionEPSS 4.7%CVE-2026-18599HIGHGL.iNet GL-MT3000 Logread Lua RPC Plugin logread logread.set_config command injectionEPSS 4.4%CVE-2026-18684CRITICALGL.iNet GL-MT3000 modem.so glc remove_profile command injectionEPSS 3.6%CVE-2026-18602CRITICALGL.iNet GL-MT3000 ovpn-client.so Native Plugin glc ovpn-client.get_recommend_config command injectionEPSS 3.6%CVE-2026-18601CRITICALGL.iNet GL-MT3000 ovpn-client.so Native Plugin glc ovpn-client.check_config command injectionEPSS 3.6%CVE-2026-18600HIGHGL.iNet GL-MT3000 Network Lua RPC Plugin network network.switch_status command injectionEPSS 3.2%