Critical severity9.8NVD Advisory· Published Feb 23, 2026· Updated Jun 17, 2026
CVE-2025-70327
CVE-2025-70327
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.
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Affected products
3- cpe:2.3:o:totolink:x5000r_firmware:9.1.0cu.2415_b20250515:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
2- github.com/neighborhood-H/0-DAY/blob/main/Toto-link/X5000R/SetDiagnosisCfg/report.mdnvdExploitThird Party Advisory
- www.notion.so/TOTOLINK-X5000R-SetDiagnosisCfg-2d170566ca7f8098a0bcee9f2a15d40dnvdExploitThird Party Advisory
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