RCE in Totolink X5000r
CVE-2026-91853
A vulnerability has been found in TOTOLINK X5000R 9.1.0cu.2089_B20211224. The impacted element is the function exportOvpn of the file /cgi-bin/cstecgi.cgi?action=exportOvpn&type=user of the component Export Ovpn Handler. The manipulation of the argument filetype leads to os command injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.018 (78.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Totolink X5000r — versions 9.1.0cu.2089_B20211224
Weakness classification (CWE)
References
- vuldb.com/vuln/404082 (technical-description, vdb-entry)
- vuldb.com/vuln/404082/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-91853 (third-party-advisory)
- vuldb.com/submit/933810 (third-party-advisory)
- github.com/awigwu76/TOTOLINK_X5000R/blob/main/2.md (exploit)
- www.totolink.net/ (product)
Frequently asked questions
- What is CVE-2026-91853?
- CVE-2026-91853 is a high-severity vulnerability in Totolink X5000r, classified under Command Injection. CVSS score: 7.4/10. Published 2026-09-15.
- How severe is CVE-2026-91853?
- High severity. CVSS v3 base score is 7.4 out of 10.