shell bypass 403

UnknownSec Shell

: /sys/class/tty/ttyS21/device/ [ drwxr-xr-x ]
name last edit size owner:downer permission options
..
driver 2026-02-18 02:37:43 dir root:root drwxr-xr-x
power 2026-02-18 02:37:43 dir root:root drwxr-xr-x
subsystem 2026-02-18 02:29:03 dir root:root drwxr-xr-x
tty 2026-02-18 02:26:29 dir root:root drwxr-xr-x
uevent 2026-02-18 02:37:43 4 KB root:root -rw-r--r--
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