CVE-2026-15486 TRENDnet TEW-821DAP Firmware Update tools_ddns sub_42026C os command injection
Remote attackers can execute arbitrary OS commands via the DDNS handler in the end-of-life TRENDnet TEW-821DAP firmware.
- 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-2026-15486?
CVE-2026-15486 is a medium-severity command injection 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 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.
Which versions are affected by CVE-2026-15486?
How do I fix CVE-2026-15486?
No fix has been published for CVE-2026-15486 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-15486 being exploited?
There is no known exploitation of CVE-2026-15486 in the wild and no public exploit code.
Sources
Also known as GHSA-xf2v-w36q-24wf.