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ont-leox-lxt-010s-h: document CLI access on V3.3.4L7 via formSysCmd - #520
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simonebortolin
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Nov 6, 2026
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Documents read-only CLI access on the LEOX LXT-010S-H with firmware V3.3.4L7, where the telnet service accepts the connection on port 23 but closes it immediately (no banner, no login) and the web UI "Remote Access Configuration" page renders empty.
The stick still exposes the Realtek Boa
formSysCmdhandler (command injection, CVE-2019-19824 family), which allowsomcicli/diagcommands with the documentedleoxaccount — enough for a full read-only OMCI dump without telnet or UART.Also adds a warning that
formExportOMCIloghangs the single-threaded Boa server and leaves verbose OMCI logging enabled (omcicli set logfile 3 ffffffff), requiring a physical power cycle to recover.