shell bypass 403

UnknownSec Shell

: /sys/devices/platform/serial8250/tty/ [ drwxr-xr-x ]
name last edit size owner:downer permission options
..
ttyS1 2026-06-02 15:25:42 dir root:root drwxr-xr-x
ttyS2 2026-06-02 15:25:42 dir root:root drwxr-xr-x
ttyS3 2026-06-02 15:25:42 dir root:root drwxr-xr-x
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