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CVE-2026-77945— TRENDnet TEW-821DAP ssi upload.cgi command injection

Quick assessment

Affected

TRENDnet TEW-821DAP

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.

在 TRENDnet TEW-821DAP 固件版本 2.2.01b05 中发现了一个漏洞。受影响的是组件 ssi 中文件 /cgi-bin/upload.cgi 的某个未知函数。通过操纵参数 filename，可导致命令注入。该漏洞可被远程利用，且相关 exploit 已公开，可能被攻击者利用。

CVSS 7.4 · High EPSS 1.77% · P76 Updated Aug 25, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

Vendor	Product	Version Range	Status
TRENDnet	TEW-821DAP	`2.2.01b05`	affected

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Vulnerability Information

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Vulnerability Title

TRENDnet TEW-821DAP ssi upload.cgi command injection

Source: CVE Program / CVE List V5

Vulnerability Description

A vulnerability was found in TRENDnet TEW-821DAP 2.2.01b05. Affected is an unknown function of the file /cgi-bin/upload.cgi of the component ssi. Performing a manipulation of the argument filename results in command injection. The attack may be initiated 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: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

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
TRENDnet	TEW-821DAP	2.2.01b05	`cpe:2.3:o:trendnet:tew-821dap_firmware::::::::`

II. Public POCs for CVE-2026-77945

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-77945

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Same Patch Batch · TRENDnet · 2026-08-22 · 3 CVEs total

CVE-2026-77946	10.0 CRITICAL	TRENDnet TEW-821DAP NTP Timezone Configuration apply_time.cgi uci_safe_get stack-based ove
CVE-2026-77988	6.6 MEDIUM	TRENDnet TEW-823DRU CLI Configuration Tool nvram_get command injection

IV. Related Vulnerabilities

Same product: TEW-821DAP

Same vendor: TRENDnet

Same weakness: CWE-77

V. Comments for CVE-2026-77945

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CVE-2026-77945— TRENDnet TEW-821DAP ssi upload.cgi command injection

Quick assessment

Possible ATT&CK Techniques 1 AI

Affected Version Matrix 1

I. Basic Information for CVE-2026-77945

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-77945

III. Intelligence Information for CVE-2026-77945

Vendor Advisories for CVE-2026-77945 (1)

Proof of Concept for CVE-2026-77945 (1)

News Coverage for CVE-2026-77945 (1)

Other References for CVE-2026-77945 (1)

Same Patch Batch · TRENDnet · 2026-08-22 · 3 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-77945

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