| Title | Tozed Kangwei ZLT X300 6.01.3 Command Injection |
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| Description | The Tozed ZLT X300 5G CPE router contains a critical OS command injection vulnerability in its TR-069/CWMP client daemon (netcwmpd). The IPPingDiagnostics handler
(process_ping function at 0x463A14) passes the Host parameter from TR-069 SetParameterValues directly into a sprintf format string at 0x463E6C that builds a shell
command. The command is executed via system_by_root() as root through the service_shell dispatcher chain (sub_5BA8C4 → sub_5BC23C → sub_5BBC88). No input validation is
performed on the Host parameter.
CVSS: 9.8 Critical (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CWE: CWE-78
Advisory: https://github.com/danish1162/CVE-2026-2035703-x300/security/advisories/GHSA-qcpp-vfr2-v242
Researcher: danish1162 (HackerOne/Bugcrowd/GitHub) |
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| Source | ⚠️ https://github.com/danish1162/CVE-2026-2035703-x300/security/advisories/GHSA-qcpp-vfr2-v242 |
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| User | danish1162 (UID 100944) |
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| Submission | 09/02/2026 01:12 (1 month ago) |
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| Moderation | 10/10/2026 17:42 (1 month later) |
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| Status | Accepted |
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| VulDB entry | 416233 [TOZED X300 up to 6.01.3 IPPingDiagnostics process_ping Host os command injection] |
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| Points | 20 |
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