Critical severity · published Feb 23, 2026
CVE-2025-70327
TOTOLINK X5000R v9.1.0cu_2415_B20250515 contains an argument injection vulnerability in the setDiagnosisCfg handler of the /usr/sbin/lighttpd executable
9.8
CVSS
0.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XF
X5000r Firmware · Totolink
9.1.0cu.2415_b20250515 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-70327
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-70327
Exploit
https://github.com/neighborhood-H/0-DAY/blob/main/Toto-link/X5000R/SetDiagnosisCfg/report.md
Exploit
https://www.notion.so/TOTOLINK-X5000R-SetDiagnosisCfg-2d170566ca7f8098a0bcee9f2a15d40d?source=copy_link
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