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CVE-2025-7531— Tenda FH1202 PPTPUserSetting fromPptpUserSetting stack-based overflow

Quick assessment

Affected
Tenda FH1202
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 FH1202是中国腾达（Tenda）公司的一款无线路由器。 Tenda FH1202 1.2.0.14(408)版本存在安全漏洞，该漏洞源于文件/goform/PPTPUserSetting中函数fromPptpUserSetting对参数delno的错误操作导致栈缓冲区溢出。

CVSS 8.8 · High EPSS 1.00% · P60
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I. Basic Information for CVE-2025-7531

Vulnerability Information
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Vulnerability Title
Tenda FH1202 PPTPUserSetting fromPptpUserSetting stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability, which was classified as critical, was found in Tenda FH1202 1.2.0.14(408). This affects the function fromPptpUserSetting of the file /goform/PPTPUserSetting. The manipulation of the argument delno leads to stack-based buffer overflow. It is possible to initiate the attack 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 FH1202 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda FH1202是中国腾达（Tenda）公司的一款无线路由器。 Tenda FH1202 1.2.0.14(408)版本存在安全漏洞，该漏洞源于文件/goform/PPTPUserSetting中函数fromPptpUserSetting对参数delno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 FH1202 1.2.0.14(408) -

II. Public POCs for CVE-2025-7531

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6803 chars
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III. Intelligence Information for CVE-2025-7531

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Same Patch Batch · Tenda · 2025-07-13 · 11 CVEs total

CVE-2025-7551 8.8 HIGH Tenda FH1201 PPTPDClient fromPptpUserAdd stack-based overflow
CVE-2025-7550 8.8 HIGH Tenda FH1201 GstDhcpSetSer fromGstDhcpSetSer stack-based overflow
CVE-2025-7549 8.8 HIGH Tenda FH1201 L7Prot frmL7ProtForm stack-based overflow
CVE-2025-7548 8.8 HIGH Tenda FH1201 SafeEmailFilter formSafeEmailFilter stack-based overflow
CVE-2025-7544 8.8 HIGH Tenda AC1206 setMacFilterCfg formSetMacFilterCfg stack-based overflow
CVE-2025-7532 8.8 HIGH Tenda FH1202 webExcptypemanFilter fromwebExcptypemanFilter stack-based overflow
CVE-2025-7530 8.8 HIGH Tenda FH1202 PPTPDClient fromPptpUserAdd stack-based overflow
CVE-2025-7529 8.8 HIGH Tenda FH1202 Natlimit fromNatlimit stack-based overflow
CVE-2025-7528 8.8 HIGH Tenda FH1202 GstDhcpSetSer fromGstDhcpSetSer stack-based overflow
CVE-2025-7527 8.8 HIGH Tenda FH1202 AdvSetWan fromAdvSetWan stack-based overflow

IV. Related Vulnerabilities

Same product: FH1202
Same vendor: Tenda
Same weakness: CWE-121

V. Comments for CVE-2025-7531

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