CVE-2026-15486

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 4.0

5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS

1.8% chance of exploitation in the next 30 days; higher than 77% of CVEs (scores of 2026-10-25)

CWEs

CWE-77, CWE-78

Published

2026-07-12

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

References

• https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI4.md
• https://vuldb.com/cve/CVE-2026-15486
• https://vuldb.com/submit/842383
• https://vuldb.com/vuln/377793
• https://vuldb.com/vuln/377793/cti

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