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I. Basic Information for CVE-2026-3678
Vulnerability Information
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Vulnerability Title
Tenda FH451 AdvSetWan sub_3C434 stack-based overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was determined in Tenda FH451 1.0.0.9. Affected is the function sub_3C434 of the file /goform/AdvSetWan. This manipulation of the argument wanmode/PPPOEPassword causes stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
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，该漏洞源于对文件/goform/AdvSetWan中参数wanmode/PPPOEPassword的错误操作，可能导致栈缓冲区溢出。
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
VendorProductAffected VersionsCPESubscribe
TendaFH451 1.0.0.9 cpe:2.3:o:tenda:fh451_firmware:*:*:*:*:*:*:*:*
II. Public POCs for CVE-2026-3678
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
kimi-k2.5 · 7986 chars
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III. Intelligence Information for CVE-2026-3678
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IV. Related Vulnerabilities
Same product: FH451
Same vendor: Tenda
Same weakness: CWE-121
V. Comments for CVE-2026-3678

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