CVE-2025-70327

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

TOTOLINK X5000R v9.1.0cu_2415_B20250515 contains an argument injection vulnerability in the setDiagnosisCfg handler of the /usr/sbin/lighttpd executable. The ip parameter is retrieved via websGetVar and passed to a ping command through CsteSystem without validating if the input starts with a hyphen (-). This allows remote authenticated attackers to inject arbitrary command-line options into the ping utility, potentially leading to a Denial of Service (DoS) by causing excessive resource consumption or prolonged execution.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-88 CWE-400

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/neighborhood-H/0-DAY/blob/main/Toto-link/X5000R/SetDiagnosisCfg/report.mdExploit, Third Party Advisory
https://www.notion.so/TOTOLINK-X5000R-SetDiagnosisCfg-2d170566ca7f8098a0bcee9f2a15d40d?source=copy_linkExploit, Third Party Advisory

Timeline

Published: Feb 23, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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