TOTOLINK X6000R UploadFirmwareFile cstecgi.cgi firmware_check os command injection

A security vulnerability has been detected in TOTOLINK X6000R 9.4.0cu.652_B20230116. The impacted element is the function firmware_check of the file /cgi-bin/cstecgi.cgi of the component UploadFirmwareFile Handler. Such manipulation of the argument file_name leads to os command injection. The attack may be performed from remote.

Source published

6 Oct 2026 01:00:19 UTC

Source modified

6 Oct 2026 13:25:02 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

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CVSS 4.0 · 10.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X

CVSS 3.1 · 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:R

CVSS 3.0 · 10.0 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:X/RL:X/RC:R

CVSS 2.0 · 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C/E:ND/RL:ND/RC:UR