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OS command injection in TOTOLINK X6000R firmware upload handler

Priority MEDIUM 53CWE-77Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

A vulnerability affects TOTOLINK X6000R 9.4.0cu.652_B20230116. The firmware_check function of the /cgi-bin/cstecgi.cgi UploadFirmwareFile handler does not sanitize the file_name argument before it reaches an OS command (CWE-78). A remote attacker can run operating system commands on the device without authentication or user interaction.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.02128 82nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TOTOLINKX6000R9.4.0cu.652_B20230116—No fix listedCNA
  • X6000R VendorTOTOLINK Affected 9.4.0cu.652_B20230116 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:o:totolink:x6000r_firmware:*:*:*:*:*:*:*:*——TOTOLINK
  • cpe:2.3:o:totolink:x6000r_firmware:*:*:*:*:*:*:*:* Versions — — ·TOTOLINK

Remediation

The sources list no fixed version for TOTOLINK X6000R.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-105484
  2. 2026-10-06 Alias added: GHSA-34j5-jp28-25g9
  3. 2026-10-06 CISA SSVC decision points changed

References

  • TI-2023-25090 An issue in TOTOLINK A3700R v.9.1.2u.6165_20211012 allows a remote attacker to execute… CVSS 3.1CRITICAL 9.8
  • TI-2026-80926 TOTOLINK A950RG stack-based overflow in infostat.cgi via CONTENT_LENGTH CVSS 4.0CRITICAL 10.0
  • TI-2026-79142 Command injection in TOTOLINK A950RG UploadCustomModule function CVSS 4.0CRITICAL 10.0
  • TI-2026-79031 TOTOLINK EX200 setWiFiAclAddConfig stack-based buffer overflow CVSS 4.0CRITICAL 10.0
  • TI-2026-79012 Stack-based buffer overflow in TOTOLINK EX200 setStaticDhcpConfig CVSS 4.0CRITICAL 10.0
  • TI-2026-67719 Stack-based overflow in Totolink A3002MU QoS rule handler CVSS 4.0CRITICAL 10.0
See all 1321 →

Sources