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I. Basic Information for CVE-2026-4565
Vulnerability Information
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Vulnerability Title
Tenda AC21 SetNetControlList formSetQosBand buffer overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was detected in Tenda AC21 16.03.08.16. Impacted is the function formSetQosBand of the file /goform/SetNetControlList. Performing a manipulation of the argument list results in buffer overflow. The attack can be initiated remotely. The exploit is now public and may be used.
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
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Tenda AC21 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda AC21是中国腾达（Tenda）公司的一款无线路由器。 Tenda AC21 16.03.08.16版本存在安全漏洞，该漏洞源于对文件/goform/SetNetControlList中formSetQosBand函数的list参数操作不当，可能导致缓冲区溢出。
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
TendaAC21 16.03.08.16 cpe:2.3:o:tenda:ac21_firmware:*:*:*:*:*:*:*:*
II. Public POCs for CVE-2026-4565
#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
kimi-k2.5 · 4965 chars
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III. Intelligence Information for CVE-2026-4565
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IV. Related Vulnerabilities
Same product: AC21
Same vendor: Tenda
Same weakness: CWE-120
V. Comments for CVE-2026-4565

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