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CVE-2026-76591— TRENDnet TEW-755AP ssi email.cgi log_email_server command injection

Quick assessment

Affected
TRENDnet TEW-755AP
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.

TRENDnet TEW-755AP是美国TRENDnet公司的一款无线接入点设备。 TRENDnet TEW-755AP 20260702及之前版本存在安全漏洞，该漏洞源于对文件/cgi-bin/email.cgi中log_email_server函数（组件ssi）的错误操作，可能导致远程命令注入。

CVSS 7.4 · High EPSS 1.32% · P68

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
TRENDnet TEW-755AP 20260702 affected
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I. Basic Information for CVE-2026-76591

Vulnerability Information
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Vulnerability Title
TRENDnet TEW-755AP ssi email.cgi log_email_server command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A security flaw has been discovered in TRENDnet TEW-755AP up to 20260702. This affects the function log_email_server of the file /cgi-bin/email.cgi of the component ssi. Performing a manipulation results in command injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
TRENDnet TEW-755AP 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TRENDnet TEW-755AP是美国TRENDnet公司的一款无线接入点设备。 TRENDnet TEW-755AP 20260702及之前版本存在安全漏洞，该漏洞源于对文件/cgi-bin/email.cgi中log_email_server函数（组件ssi）的错误操作，可能导致远程命令注入。
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-755AP 20260702 cpe:2.3:o:trendnet:tew-755ap_firmware:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-76591

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7717 chars
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III. Intelligence Information for CVE-2026-76591

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Proof of Concept for CVE-2026-76591 (2)

Same Patch Batch · TRENDnet · 2026-08-19 · 8 CVEs total

CVE-2026-76584 9.9 CRITICAL TRENDnet TV-IP751WIC alphapd set_time.cgi stack-based overflow
CVE-2026-76589 9.9 CRITICAL TRENDnet TEW-755AP mycli FUN_401000 stack-based overflow
CVE-2026-76590 9.9 CRITICAL TRENDnet TEW-755AP ssi wan.cgi stack-based overflow
CVE-2026-75984 7.4 HIGH TRENDnet TEW-823DRU admin.cgi command injection
CVE-2026-75985 7.4 HIGH TRENDnet Router ping.cgi command injection
CVE-2026-76582 7.4 HIGH TRENDnet TEW-821DAP ssi ping.cgi system command injection
CVE-2026-76583 7.4 HIGH TRENDnet TV-IP751WIC alphapd set_time.cgi command injection

IV. Related Vulnerabilities

Same product: TEW-755AP
Same vendor: TRENDnet
Same weakness: CWE-77

V. Comments for CVE-2026-76591

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