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CVE-2026-7607— TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow

Quick assessment

Affected
TRENDnet TEW-821DAP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TRENDnet TEW-821DAP是美国趋势网络（TRENDnet）公司的一款无线接入点。 TRENDnet TEW-821DAP 1.12B01版本存在缓冲区错误漏洞，该漏洞源于Firmware Udpate组件中auto_update_firmware函数对参数str操作不当，可能导致缓冲区溢出。

CVSS 8.8 · High EPSS 1.01% · P62

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
TRENDnet TEW-821DAP 1.12B01 affected
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I. Basic Information for CVE-2026-7607

Vulnerability Information
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Vulnerability Title
TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow
Source: CVE Program / CVE List V5
Vulnerability Description
A security vulnerability has been detected in TRENDnet TEW-821DAP 1.12B01. Impacted is the function auto_update_firmware of the component Firmware Udpate. The manipulation of the argument str leads to buffer overflow. The attack may be initiated remotely. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling". This vulnerability only affects products that are no longer supported by the maintainer.
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
TRENDnet TEW-821DAP 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TRENDnet TEW-821DAP是美国趋势网络（TRENDnet）公司的一款无线接入点。 TRENDnet TEW-821DAP 1.12B01版本存在缓冲区错误漏洞，该漏洞源于Firmware Udpate组件中auto_update_firmware函数对参数str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

Vendor Product Affected Versions CPE Subscribe
TRENDnet TEW-821DAP 1.12B01 cpe:2.3:o:trendnet:tew-821dap_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-7607

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III. Intelligence Information for CVE-2026-7607

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Patches & Fixes for CVE-2026-7607 (1)

Same Patch Batch · TRENDnet · 2026-05-02 · 6 CVEs total

CVE-2026-7609 6.3 MEDIUM TRENDnet TEW-821DAP Firmware Udpate diagnostic tools_diagnostic os command injection
CVE-2026-7608 5.5 MEDIUM TRENDnet TEW-821DAP tools_diagnostic os command injection
CVE-2026-7606 3.7 LOW TRENDnet TEW-821DAP Firmware Update new_gui_update_firmware data authenticity
CVE-2026-7610 3.7 LOW TRENDnet TEW-821DAP Firmware Update ssi cleartext transmission
CVE-2026-7611 3.7 LOW TRENDnet TEW-821DAP Firmware Update cameo_dev.sh platform_do_upgrade_cameo_dev data authen

IV. Related Vulnerabilities

Same product: TEW-821DAP
Same vendor: TRENDnet
Same weakness: CWE-120

V. Comments for CVE-2026-7607

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