CVE-2026-15486 Details
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.
A command injection vulnerability has been identified in the TRENDnet TEW-821DAP access point, specifically in firmware version 1.11B03. The issue arises in the Firmware Update Handler, where user-supplied input for DDNS configuration—namely hostname, username, and password—is not properly validated before being written to a configuration file. This unverified input can be exploited to inject malicious commands, which are then executed on the system. The vulnerability can be exploited remotely.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 12, 2026CISA-ADP
Assessed Jul 13, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI4.md | [email protected] | ExploitTechnical Description |
| https://vuldb.com/cve/CVE-2026-15486 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/842383 | [email protected] | Permission Required |
| https://vuldb.com/vuln/377793 | [email protected] | Permission Required |
| https://vuldb.com/vuln/377793/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| TRENDnet TEW-821DAP | v1.11B03 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 13, 2026 | CVE Modified | CISA-ADP |
| Jul 12, 2026 | New CVE Received | [email protected] |