Buffer overflow in Tenda Hg3
CVE-2026-7151
A vulnerability was determined in Tenda HG3 2.0. Impacted is the function formUploadConfig of the file /boaform/formIPv6Routing. This manipulation of the argument destNet causes stack-based buffer overflow. It is possible to initiate the a…
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 Hg3 — versions 2.0
- Tenda Hg3_firmware — versions 300003070
Weakness classification (CWE)
References
- VDB-359750 | Tenda HG3 formIPv6Routing formUploadConfig stack-based overflow (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-359750 | CTI Indicators (IOB, IOC, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #802058 | Tenda HG3 N300 Wi-Fi xPON ONT HARD_VERSION=V2.0 , Version: 300003070 dos (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-2026-7151?
- CVE-2026-7151 is a high-severity vulnerability in Tenda Hg3, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-27.
- How severe is CVE-2026-7151?
- High severity. CVSS v3 base score is 8.8 out of 10.