Buffer overflow in Tenda I12
CVE-2026-5609
A flaw has been found in Tenda i12 1.0.0.11(3862). Affected by this vulnerability is the function formwrlSSIDset of the file /goform/wifiSSIDset of the component Parameter Handler. This manipulation of the argument index/wl_radio causes st…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (25.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Tenda I12 — versions 1.0.0.11(3862)
- Tenda I12_firmware — versions 1.0.0.11\(3862\)
Weakness classification (CWE)
References
- VDB-355400 | Tenda i12 Parameter wifiSSIDset formwrlSSIDset stack-based overflow (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-355400 | CTI Indicators (IOB, IOC, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #785337 | Tenda i12 V1.0.0.11(3862) Stack-based Buffer Overflow (Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (Exploit, Third Party Advisory, exploit)
- cna@vuldb.com (Product, product)
Frequently asked questions
- What is CVE-2026-5609?
- CVE-2026-5609 is a high-severity vulnerability in Tenda I12, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-06.
- How severe is CVE-2026-5609?
- High severity. CVSS v3 base score is 8.8 out of 10.