CVE-2025-9046— Tenda AC20 setMacFilterCfg sub_46A2AC stack-based overflow
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I. Basic Information for CVE-2025-9046
Vulnerability Information
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Vulnerability Title
Tenda AC20 setMacFilterCfg sub_46A2AC stack-based overflow
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was identified in Tenda AC20 16.03.08.12. This issue affects the function sub_46A2AC of the file /goform/setMacFilterCfg. The manipulation of the argument deviceList leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the 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
栈缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Tenda AC20 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda AC20是中国腾达（Tenda）公司的一款无线路由器。 Tenda AC20 16.03.08.12版本存在安全漏洞，该漏洞源于/goform/setMacFilterCfg文件中sub_46A2AC函数对参数deviceList处理不当导致栈缓冲区溢出。
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
II. Public POCs for CVE-2025-9046
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- Submit #631932: Tenda AC20 V16.03.08.12 Buffer Overflowthird-party-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-9046
Same Patch Batch · Tenda · 2025-08-15 · 4 CVEs total
| CVE-2025-9023 | 8.8 HIGH | Tenda AC7/AC18 SetLEDCfg formSetSchedLed buffer overflow |
| CVE-2025-9007 | 8.8 HIGH | Tenda CH22 editFileName formeditFileName buffer overflow |
| CVE-2025-9006 | 8.8 HIGH | Tenda CH22 delFileName formdelFileName buffer overflow |
IV. Related Vulnerabilities
Same product: AC20
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Tenda AC20 WifiExtraSet buffer overflow
Same vendor: Tenda
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Tenda AC6 httpd WifiExtraSet fromSetWirelessRepeat os comman - CVE-2026-8259
Tenda AC6 httpd telnet os command injection - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
Same weakness: CWE-121
- CVE-2026-8258
Squirrel sqstdstring.cpp validate_format stack-based overflo - CVE-2026-8234
EFM ipTIME A8004T WifiBasicSet formWifiBasicSet stack-based - CVE-2026-6665
PgBouncer buffer overflow in SCRAM - CVE-2026-41509
Integer underflow in crypto_sign_open() leads to buffer over - CVE-2026-8138
Tenda CX12L SetPptpServerCfg” formSetPPTPServer stack-based
V. Comments for CVE-2025-9046
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