TRENDnet TEW-821DAP 1.11B03 DNS Lookup /goform/tools_nslookup sub_43F2C4 nslookup_target/dns_server os command injection

Summaryinfo

A vulnerability, which was classified as critical, was found in TRENDnet TEW-821DAP 1.11B03. This affects the function sub_43F2C4 of the file /goform/tools_nslookup of the component DNS Lookup Handler. Such manipulation of the argument nslookup_target/dns_server leads to os command injection. This vulnerability only affects products that are no longer supported by the maintainer. This vulnerability is uniquely identified as CVE-2026-15485. The attack can be launched remotely. No exploit exists. The vendor explains: "We are unable to confirm the existence of the vulnerabilities for (...) TEW-821DAP (v1.0R) as these items have been EOL. "

Detailsinfo

A vulnerability was found in TRENDnet TEW-821DAP 1.11B03. It has been rated as critical. Affected by this issue is the function sub_43F2C4 of the file /goform/tools_nslookup of the component DNS Lookup Handler. The manipulation of the argument nslookup_target/dns_server with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-15485. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 07/11/2026). The MITRE ATT&CK project declares the attack technique as T1202.

The vendor explains: "We are unable to confirm the existence of the vulnerabilities for (...) TEW-821DAP (v1.0R) as these items have been EOL. "

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• TRENDnet

Name

• TEW-821DAP

Version

• 1.11B03

License

• commercial

Support

• end of life

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Accepted

• Submit #842382: Trendnet TEW-821DAP v1.11B03 CWE-78 Improper Neutralization of Special Elements used in an O (by IOT_Res)

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