CVE-2026-15484 TRENDnet TEW-821DAP ssi tools_nslookup sub_41EC14 buffer overflow

High 8.7 Published Updated

Remote attackers can exploit a buffer overflow in the nslookup tool of the TRENDnet TEW-821DAP to execute arbitrary code on the unsupported device.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-15484?

CVE-2026-15484 is a high-severity memory corruption vulnerability in TRENDnet TEW-821DAP, published on 12 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was detected in TRENDnet TEW-821DAP 1.12B01. The affected element is the function sub_41EC14 of the file /goform/tools_nslookup of the component ssi. The manipulation results in buffer overflow. It is possible to launch the attack 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.

Weakness: CWE-120, CWE-119

Which versions are affected by CVE-2026-15484?

How do I fix CVE-2026-15484?

No fix has been published for CVE-2026-15484 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-15484 being exploited?

There is no known exploitation of CVE-2026-15484 in the wild and no public exploit code.

Sources

Also known as GHSA-98p4-49cg-c9qh.

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