CVE-2026-7609— TRENDnet TEW-821DAP Firmware Udpate diagnostic tools_diagnostic os command injection
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I. Basic Information for CVE-2026-7609
Vulnerability Information
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Vulnerability Title
TRENDnet TEW-821DAP Firmware Udpate diagnostic tools_diagnostic os command injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw has been found in TRENDnet TEW-821DAP up to 1.12B01. The impacted element is the function tools_diagnostic of the file /tmp/diagnostic of the component Firmware Udpate. This manipulation causes os command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used. 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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
TRENDnet TEW-821DAP 命令注入漏洞
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及之前版本存在命令注入漏洞，该漏洞源于Firmware Udpate组件中文件/tmp/diagnostic的tools_diagnostic函数操作不当，可能导致OS命令注入。
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-2026-7609
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- CVE-2026-7609 | TRENDnet TEW-821DAP up to 1.12B01 Firmware Udpate /tmp/diagnostic tools_diagnostic os command injectionvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-7609
Same Patch Batch · TRENDnet · 2026-05-02 · 6 CVEs total
| CVE-2026-7607 | 8.8 HIGH | TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow |
| 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
- CVE-2026-7611
TRENDnet TEW-821DAP Firmware Update cameo_dev.sh platform_do - CVE-2026-7610
TRENDnet TEW-821DAP Firmware Update ssi cleartext transmissi - CVE-2026-7608
TRENDnet TEW-821DAP tools_diagnostic os command injection - CVE-2026-7607
TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buf - CVE-2026-7606
TRENDnet TEW-821DAP Firmware Update new_gui_update_firmware
Same vendor: TRENDnet
- CVE-2026-7611
TRENDnet TEW-821DAP Firmware Update cameo_dev.sh platform_do - CVE-2026-7610
TRENDnet TEW-821DAP Firmware Update ssi cleartext transmissi - CVE-2026-7608
TRENDnet TEW-821DAP tools_diagnostic os command injection - CVE-2026-7607
TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buf - CVE-2026-7606
TRENDnet TEW-821DAP Firmware Update new_gui_update_firmware
Same weakness: CWE-78
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D-Link DNS-320 system_mgr.cgi cgi_merge_user os command inje - CVE-2026-8272
D-Link DNS-320 webfile_mgr.cgi chown os command injection - CVE-2026-8271
D-Link DNS-320 network_mgr.cgi cgi_upnp_edit os command inje - CVE-2026-8265
Tenda AC6 httpd getLogFile get_log_file os command injection - CVE-2026-8264
Tenda AC6 httpd WifiApScan formWifiApScan os command injecti
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