Vulnerability · Published Jul 12, 2025 · Assigned by VulDB

CVE-2025-7506Tenda FH451 HTTP POST Request Natlimit fromNatlimit 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 1.0% (higher than 63% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.0%top 36.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 page leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Affected products (as reported)

Vendor	Product	Versions
Tenda	FH451	1.0.0.9

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-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
https://github.com/zezhifu1/cve_report/blob/main/FH451/fromNatlimit.md related
https://github.com/zezhifu1/cve_report/blob/main/FH451/fromNatlimit.md#payload exploit
https://www.tenda.com.cn/ product