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CVE-2026-19789— Tenda AC1206 httpd web management interface WifiGuestSet set_wl_guest_iplist stack-based overflow

Quick assessment

Affected
Tenda AC1206
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 AC1206是中国Tenda公司的一款无线网络路由器。 Tenda AC1206 15.03.06.23_multi_TD01版本存在缓冲区错误漏洞，该漏洞源于httpd web管理界面set_wl_guest_iplist函数中参数shareSpeed操作导致栈缓冲区溢出，可能允许远程攻击者利用。

CVSS 8.8 · High EPSS 0.85% · P57

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Tenda AC1206 15.03.06.23_multi_TD01 affected
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I. Basic Information for CVE-2026-19789

Vulnerability Information
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Vulnerability Title
Tenda AC1206 httpd web management interface WifiGuestSet set_wl_guest_iplist stack-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was determined in Tenda AC1206 15.03.06.23_multi_TD01. This vulnerability affects the function set_wl_guest_iplist of the file /goform/WifiGuestSet of the component httpd web management interface. This manipulation of the argument shareSpeed causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.
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 AC1206 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda AC1206是中国Tenda公司的一款无线网络路由器。 Tenda AC1206 15.03.06.23_multi_TD01版本存在缓冲区错误漏洞，该漏洞源于httpd web管理界面set_wl_guest_iplist函数中参数shareSpeed操作导致栈缓冲区溢出，可能允许远程攻击者利用。
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 AC1206 15.03.06.23_multi_TD01 cpe:2.3:o:tenda:ac1206_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19789

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11579 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-19789

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Vendor Advisories for CVE-2026-19789 (1)

Other References for CVE-2026-19789 (3)

Same Patch Batch · Tenda · 2026-08-14 · 9 CVEs total

CVE-2026-19788 8.8 HIGH Tenda AC1206 httpd web management interface SetOnlineDevName set_device_name stack-based o
CVE-2026-19790 8.8 HIGH Tenda G0 httpd Web Management module formSetPortMirror stack-based overflow
CVE-2026-19791 8.8 HIGH Tenda G0 httpd web management interface module addStaticRoute stack-based overflow
CVE-2026-19792 8.8 HIGH Tenda G0 httpd web management interface module setPortMapping buffer overflow
CVE-2026-19821 8.8 HIGH Tenda AC12 httpd web management interface SetSysAutoRebbotCfg formSetRebootTimer buffer ov
CVE-2026-19822 8.8 HIGH Tenda W20E QoS Edit editQos lstAdd stack-based overflow
CVE-2026-19823 8.8 HIGH Tenda W20E QoS Rule Deletion delQos formQOSRuleDel stack-based overflow
CVE-2026-19824 8.8 HIGH Tenda W20E addIpMacBind ipMacBindListStore stack-based overflow

IV. Related Vulnerabilities

Same product: AC1206
Same vendor: Tenda
Same weakness: CWE-121

V. Comments for CVE-2026-19789

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