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CVE-2025-11123— Tenda AC18 saveAutoQos stack-based overflow

Quick assessment

Affected
Tenda AC18
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 AC18是中国腾达（Tenda）公司的一款路由器。 Tenda AC18 15.03.05.19版本存在安全漏洞，该漏洞源于文件/goform/saveAutoQos中对参数enable的错误操作导致栈缓冲区溢出，可能被远程利用。

CVSS 8.8 · High EPSS 0.74% · P52

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-11123

Vulnerability Information
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Vulnerability Title
Tenda AC18 saveAutoQos stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in Tenda AC18 15.03.05.19. This impacts an unknown function of the file /goform/saveAutoQos. This manipulation of the argument enable causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been published 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 AC18 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda AC18是中国腾达（Tenda）公司的一款路由器。 Tenda AC18 15.03.05.19版本存在安全漏洞，该漏洞源于文件/goform/saveAutoQos中对参数enable的错误操作导致栈缓冲区溢出，可能被远程利用。
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 AC18 15.03.05.19 -

II. Public POCs for CVE-2025-11123

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7924 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2025-11123

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Proof of Concept for CVE-2025-11123 (1)

News Coverage for CVE-2025-11123 (1)

Same Patch Batch · Tenda · 2025-09-28 · 6 CVEs total

CVE-2025-11122 8.8 HIGH Tenda AC18 WizardHandle stack-based overflow
CVE-2025-11120 8.8 HIGH Tenda AC8 SetServerConfig formSetServerConfig buffer overflow
CVE-2025-11117 8.8 HIGH Tenda CH22 GstDhcpSetSer formWrlExtraGet buffer overflow
CVE-2025-11091 8.8 HIGH Tenda AC21 SetStaticRouteCfg sscanf buffer overflow
CVE-2025-11121 6.3 MEDIUM Tenda AC18 AdvSetLanip command injection

IV. Related Vulnerabilities

Same product: AC18
Same vendor: Tenda
Same weakness: CWE-121

V. Comments for CVE-2025-11123

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