Medium 6.3Published Jul 12, 2026

CVE-2026-15486TRENDnet TEW-821DAP Firmware Update tools_ddns sub_42026C os command injection

Updated under an hour ago (Oct 26, 2026, 2:30 PM ET)

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It affects TRENDnet TEW-821DAP. Add what you run to find out whether that includes you.

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Every CVE for TRENDnet TEW-821DAP

Exploited in the last 30 days

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.

CVSS: 6.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
Weakness (CWE): CWE-78, CWE-77
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Jul 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

TRENDnet TEW-821DAP trendnet:tew-821dap_firmware	1.11B03	CNA record

References

References

https://vuldb.com/vuln/377793	vdb-entry, technical-description
https://vuldb.com/vuln/377793/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-15486	third-party-advisory
https://vuldb.com/submit/842383	third-party-advisory
https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI4.md	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.