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CVE-2025-7506— Tenda FH451 HTTP POST Request Natlimit fromNatlimit stack-based overflow

Quick assessment

Affected
Tenda FH451
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tenda FH451是中国腾达（Tenda）公司的一款路由器。 Tenda FH451 1.0.0.9版本存在安全漏洞，该漏洞源于文件/goform/Natlimit中函数fromNatlimit对参数page的错误操作，导致栈缓冲区溢出。

CVSS 8.8 · High EPSS 0.79% · P54

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-7506

Vulnerability Information
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Vulnerability Title
Tenda FH451 HTTP POST Request Natlimit fromNatlimit stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Tenda FH451 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda FH451是中国腾达（Tenda）公司的一款路由器。 Tenda FH451 1.0.0.9版本存在安全漏洞，该漏洞源于文件/goform/Natlimit中函数fromNatlimit对参数page的错误操作，导致栈缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tenda FH451 1.0.0.9 -

II. Public POCs for CVE-2025-7506

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 9512 chars
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III. Intelligence Information for CVE-2025-7506

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News Coverage for CVE-2025-7506 (1)

Other References for CVE-2025-7506 (1)

Same Patch Batch · Tenda · 2025-07-12 · 5 CVEs total

CVE-2025-7505 8.8 HIGH Tenda FH451 HTTP POST Request L7Prot frmL7ProtForm stack-based overflow
CVE-2025-7468 8.8 HIGH Tenda FH1201 HTTP POST Request fromSafeUrlFilter buffer overflow
CVE-2025-7465 8.8 HIGH Tenda FH1201 HTTP POST Request fromRouteStatic buffer overflow
CVE-2025-7463 8.8 HIGH Tenda FH1201 HTTP POST Request AdvSetWrlsafeset formWrlsafeset buffer overflow

IV. Related Vulnerabilities

Same product: FH451
Same vendor: Tenda
Same weakness: CWE-121

V. Comments for CVE-2025-7506

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