Vulnerability · Published Mar 7, 2026 · Assigned by VulDB
CVE-2026-3679Tenda FH451 QuickIndex formQuickIndex stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in FH451 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.7%top 47.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was identified in Tenda FH451 1.0.0.9. Affected by this vulnerability is the function formQuickIndex of the file /goform/QuickIndex. Such manipulation of the argument mit_linktype/PPPOEPassword leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is publicly available and might be used.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-349581 | Tenda FH451 QuickIndex formQuickIndex stack-based overflow vdb-entry, technical-description
- VDB-349581 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #765331 | Tenda FH451 V1.0.0.9 Stack-based Buffer Overflow third-party-advisory
- https://github.com/Litengzheng/vul_db/blob/main/FH451/vul_63/README.md exploit
- https://www.tenda.com.cn/ product