# CVE-2026-15483: TRENDnet TEW-821DAP ssi tools_nslookup sub_41EC14 buffer overflow

> Remote attackers can trigger a buffer overflow in the nslookup tool of the EOL TRENDnet TEW-821DAP, potentially causing code execution or denial of service.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Jul 2026
- **Updated:** 15 Jul 2026
- **Also known as:** GHSA-j9x6-5fxr-xh6q

## What is CVE-2026-15483?

CVE-2026-15483 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 security vulnerability has been detected in TRENDnet TEW-821DAP 1.12B01. Impacted is the function sub_41EC14 of the file /goform/tools_nslookup of the component ssi. The manipulation of the argument nslookup_target leads to buffer overflow. It is possible to initiate 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 (Buffer Copy without Checking Size of Input), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2026-15483?


## How do I fix CVE-2026-15483?

No fix has been published for CVE-2026-15483 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15483 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15483 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15483 and fix it if it is affected.

What it is: CVE-2026-15483 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15483 exists.

Affected product: TRENDnet TEW-821DAP. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-15483/ (Markdown: https://insights.sbomify.com/CVE-2026-15483/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15483
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15483
- OSV: https://osv.dev/vulnerability/CVE-2026-15483

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-15483/
Summaries are generated and may contain mistakes; the official description above is the record.