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Description

A flaw has been found in TRENDnet TEW-821DAP 1.11B03. The impacted element is the function sub_43F2C4 of the file /goform/tools_nslookup of the component DNS Lookup Handler. This manipulation of the argument nslookup_target/dns_server causes os command injection. The attack can be initiated 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.

PUBLISHED Reserved 2026-07-11 | Published 2026-07-12 | Updated 2026-07-14 | Assigner VulDB




MEDIUM: 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/E:X
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:ND/RC:UR

Problem types

OS Command Injection

Command Injection

Product status

1.11B03
affected

Timeline

2026-07-11:Advisory disclosed
2026-07-11:VulDB entry created
2026-07-11:VulDB entry last update

Credits

IOT_Res (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/377792 (VDB-377792 | TRENDnet TEW-821DAP DNS Lookup tools_nslookup sub_43F2C4 os command injection) vdb-entry technical-description

vuldb.com/vuln/377792/cti (VDB-377792 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-15485 (CVE-2026-15485 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/842382 (Submit #842382 | Trendnet TEW-821DAP v1.11B03 CWE-78 Improper Neutralization of Special Elements used in an O) third-party-advisory

github.com/...re_Update/blob/main/Trendnet/TEW-821DAP_CI3.md broken-link patch

cve.org (CVE-2026-15485)

nvd.nist.gov (CVE-2026-15485)

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