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CVE-2026-3380— Tenda F453 L7Im frmL7ImForm buffer overflow

Quick assessment

Affected
Tenda F453
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 F453是中国腾达（Tenda）公司的一款无线路由器。 Tenda F453 1.0.0.3版本存在安全漏洞，该漏洞源于对文件/goform/L7Im中函数frmL7ImForm的参数page的错误操作，可能导致缓冲区溢出。

CVSS 8.8 · High EPSS 1.05% · P63

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Tenda F453 1.0.0.3 affected
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I. Basic Information for CVE-2026-3380

Vulnerability Information
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Vulnerability Title
Tenda F453 L7Im frmL7ImForm buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Tenda F453 1.0.0.3. This issue affects the function frmL7ImForm of the file /goform/L7Im. The manipulation of the argument page results in buffer overflow. The attack may be launched remotely. The exploit has been made public and could 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
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Tenda F453 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda F453是中国腾达（Tenda）公司的一款无线路由器。 Tenda F453 1.0.0.3版本存在安全漏洞，该漏洞源于对文件/goform/L7Im中函数frmL7ImForm的参数page的错误操作，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

Vendor Product Affected Versions CPE Subscribe
Tenda F453 1.0.0.3 cpe:2.3:o:tenda:f453_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-3380

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7182 chars
Pro+ exclusive includes:
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-2026-3380

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Proof of Concept for CVE-2026-3380 (1)

Same Patch Batch · Tenda · 2026-03-01 · 6 CVEs total

CVE-2026-3400 8.8 HIGH Tenda AC15 TextEditingConversion stack-based overflow
CVE-2026-3399 8.8 HIGH Tenda F453 httpd GstDhcpSetSer fromGstDhcpSetSer buffer overflow
CVE-2026-3398 8.8 HIGH Tenda F453 httpd AdvSetWan fromAdvSetWan buffer overflow
CVE-2026-3379 8.8 HIGH Tenda F453 SetIpBind fromSetIpBind buffer overflow
CVE-2026-3378 8.8 HIGH Tenda F453 qossetting fromqossetting buffer overflow

IV. Related Vulnerabilities

Same product: F453
Same vendor: Tenda
Same weakness: CWE-120

V. Comments for CVE-2026-3380

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