CVE-2026-15486

MEDIUM

TRENDnet TEW-821DAP Firmware Update tools_ddns sub_42026C os command injection

Title source: cna

Description

A vulnerability has been found in TRENDnet TEW-821DAP 1.11B03. This affects the function sub_42026C of the file /goform/tools_ddns of the component Firmware Update Handler. Such manipulation of the argument hostname/username/password leads to os command injection. The attack can be launched remotely. The vendor explains: "We are unable to confirm the existence of the vulnerabilities for (...) TEW-821DAP (v1.0R) as these items have been EOL. " This vulnerability only affects products that are no longer supported by the maintainer.

References (5)

Core 5

Core References

Vdb Entry, Technical Description vdb-entry technical-description

VDB-377793 | TRENDnet TEW-821DAP Firmware Update tools_ddns sub_42026C os command injection

https://vuldb.com/vuln/377793

Signature, Permissions Required signature permissions-required

VDB-377793 | CTI Indicators (IOB, IOC, TTP, IOA)

https://vuldb.com/vuln/377793/cti

Third Party Advisory third-party-advisory

CVE-2026-15486 | CVE Analysis and Report

https://vuldb.com/cve/CVE-2026-15486

Third Party Advisory third-party-advisory

Submit #842383 | Trendnet TEW-821DAP v1.11B03 CWE-78 Improper Neutralization of Special Elements used in an O

https://vuldb.com/submit/842383

Patch patch

https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI4.md

View Patch ZIP pw:eip

Scores

CVSS v3 6.3

EPSS 0.0105

EPSS Percentile 60.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-77 CWE-78

Status published

Products (1)

TRENDnet/TEW-821DAP 1.11B03

Published Jul 12, 2026

Tracked Since Jul 12, 2026