# CVE-2026-7611: TRENDnet TEW-821DAP Firmware Update cameo_dev.sh platform_do_upgrade_cameo_dev data authenticity

> Insufficient verification of firmware update data authenticity allows remote attackers to bypass security checks and potentially execute arbitrary code on the device.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 May 2026
- **Updated:** 4 May 2026
- **Also known as:** GHSA-mr98-jgq9-qx85

## What is CVE-2026-7611?

CVE-2026-7611 is a medium-severity vulnerability in TRENDnet TEW-821DAP, published on 2 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was found in TRENDnet TEW-821DAP up to 1.12B01. This impacts the function platform_do_upgrade_cameo_dev of the file cameo_dev.sh of the component Firmware Update Handler. Performing a manipulation results in insufficient verification of data authenticity. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is said to be difficult. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling". This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-345 (Insufficient Verification of Data Authenticity)

## Which versions are affected by CVE-2026-7611?

It affects 1 product.


Products: Trendnet Tew-821dap Firmware.

## How do I fix CVE-2026-7611?

No fix has been published for CVE-2026-7611 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7611 being exploited?

There is no known exploitation of CVE-2026-7611 in the wild and no public exploit code.

## Other vulnerabilities in TRENDnet TEW-821DAP

- [CVE-2026-7607](https://insights.sbomify.com/CVE-2026-7607/): TRENDnet TEW-821DAP Firmware Udpate auto_update_firmware buffer overflow (high 8.7)
- [CVE-2023-51146](https://insights.sbomify.com/CVE-2023-51146/): Memory corruption in n/a (high 8.0)
- [CVE-2023-51147](https://insights.sbomify.com/CVE-2023-51147/): Memory corruption in n/a (high 8.0)
- [CVE-2023-51148](https://insights.sbomify.com/CVE-2023-51148/): Memory corruption in n/a (high 8.0)
- [CVE-2026-7606](https://insights.sbomify.com/CVE-2026-7606/): TRENDnet TEW-821DAP Firmware Update new_gui_update_firmware data authenticity (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7611 and fix it if it is affected.

What it is: CVE-2026-7611 is a medium-severity vulnerability in TRENDnet TEW-821DAP, published on 2 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-7611 in the wild and no public exploit code.

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-2026-7611/ (Markdown: https://insights.sbomify.com/CVE-2026-7611/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7611
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7611
- OSV: https://osv.dev/vulnerability/CVE-2026-7611

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7611/
Summaries are generated and may contain mistakes; the official description above is the record.