Resource exhaustion in Totolink X5000r
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. 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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Totolink X5000r
- Totolink X5000r Firmware — versions 9.1.0cu.2415_b20250515
Weakness classification (CWE)
References
- www.notion.so/TOTOLINK-X5000R-SetDiagnosisCfg-2d170566ca7f8098a0bcee9f2a15d40d (Exploit, Third Party Advisory)
- github.com/neighborhood-H/0-DAY/blob/main/Toto-link/X5000R/SetDiagnosisCfg/repo… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-70327?
- CVE-2025-70327 is a critical-severity vulnerability in Totolink X5000r, classified under Argument Injection. CVSS score: 9.8/10. Published 2026-02-23.
- How severe is CVE-2025-70327?
- Critical severity. CVSS v3 base score is 9.8 out of 10.