RCE in Totolink A8000ru
CVE-2026-9475
A vulnerability was determined in Totolink A8000RU 7.1cu.643_b20200521. This affects the function setIpQosRules of the file /cgi-bin/cstecgi.cgi of the component Web Management Interface. This manipulation of the argument Comment causes os command injection. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.
Vulnerability class: Command Injection (OS Command Injection)
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: 0.033 (87.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.033 · change: +0.013
Affected products
- Totolink A8000ru — versions 7.1cu.643_b20200521
Weakness classification (CWE)
References
- vuldb.com/vuln/365456 (technical-description, vdb-entry)
- vuldb.com/vuln/365456/cti (signature, permissions-required)
- vuldb.com/submit/813458 (third-party-advisory)
- github.com/Litengzheng/vuldb_new2/blob/main/A8000RU/vul_347/README.md (exploit)
- www.totolink.net/ (product)
Frequently asked questions
- What is CVE-2026-9475?
- CVE-2026-9475 is a critical-severity vulnerability in Totolink A8000ru, classified under Command Injection. CVSS score: 9.8/10. Published 2026-05-25.
- How severe is CVE-2026-9475?
- Critical severity. CVSS v3 base score is 9.8 out of 10.