Buffer overflow in Tenda Fh451
CVE-2025-7506
A vulnerability classified as critical was found in Tenda FH451 1.0.0.9. Affected by this vulnerability is the function fromNatlimit of the file /goform/Natlimit of the component HTTP POST Request Handler. The manipulation of the argument…
Vulnerability class: Buffer Overflow
EPSS: 0.009 (75.8th 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/E:P/RL:X/RC:R.
Affected products
- Tenda Fh451 — versions 1.0.0.9
Weakness classification (CWE)
References
- VDB-316189 | Tenda FH451 HTTP POST Request Natlimit fromNatlimit stack-based overflow (vdb-entry, technical-description)
- VDB-316189 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #611505 | Tenda FH451 v1.0.0.9 Stack-based Buffer Overflow (third-party-advisory)
- github.com/zezhifu1/cve_report/blob/main/FH451/fromNatlimit.md (related)
- github.com/zezhifu1/cve_report/blob/main/FH451/fromNatlimit.md (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2025-7506?
- CVE-2025-7506 is a high-severity vulnerability in Tenda Fh451, classified under Stack-based Buffer Overflow. CVSS score: 8.8/10. Published 2025-07-12.
- How severe is CVE-2025-7506?
- High severity. CVSS v3 base score is 8.8 out of 10.