RCE in Tenda G103
CVE-2026-5338
A security vulnerability has been detected in Tenda G103 1.0.0.5. The affected element is the function action_set_system_settings of the file system.lua of the component Setting Handler. Such manipulation of the argument lanIp leads to command injection. The attack may be performed from remote. The exploit has been disclosed publicly and may be used.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.083 (94.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.048 · newest: 0.083 · change: +0.035
Affected products
- Tenda G103 — versions 1.0.0.5
- Tenda G103 Firmware — versions 1.0.0.5
Weakness classification (CWE)
References
- vuldb.com/vuln/354669 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/354669/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/781131 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/ZZ2266/.github.io/tree/main/Tenda G103/action_set_system_settings (Exploit, Third Party Advisory, exploit)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-5338?
- CVE-2026-5338 is a medium-severity vulnerability in Tenda G103, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.7/10. Published 2026-04-02.
- How severe is CVE-2026-5338?
- Medium severity. CVSS v3 base score is 4.7 out of 10.