# CVE-2026-10159: TRENDnet TEW-432BRP formSysLog stack-based overflow

> Remote attackers can trigger a stack-based buffer overflow in the formSysLog function of the TRENDnet TEW-432BRP router, potentially leading to 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:P`)
- **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:** 31 May 2026
- **Updated:** 1 Jun 2026
- **Also known as:** GHSA-93f4-pc5c-hr94

## What is CVE-2026-10159?

CVE-2026-10159 is a high-severity memory corruption vulnerability in TRENDnet TEW-432BRP, published on 31 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A weakness has been identified in TRENDnet TEW-432BRP 3.10B20. Affected by this vulnerability is the function formSysLog of the file /goform/formSysLog. This manipulation of the argument current_page causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor explains: "This product has been EOL for 15 years (since 2009). As the item has been EOL for such a long time, we are not able to replicate or fix any vulnerabilities." This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-121 (Stack-based Buffer Overflow), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2026-10159?


## How do I fix CVE-2026-10159?

No fix has been published for CVE-2026-10159 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-10159 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-10159 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-10159 and fix it if it is affected.

What it is: CVE-2026-10159 is a high-severity memory corruption vulnerability in TRENDnet TEW-432BRP, published on 31 May 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-2026-10159 exists.

Affected product: TRENDnet TEW-432BRP. 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-2026-10159/ (Markdown: https://insights.sbomify.com/CVE-2026-10159/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-10159
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-10159
- OSV: https://osv.dev/vulnerability/CVE-2026-10159

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-10159/
Summaries are generated and may contain mistakes; the official description above is the record.