# CVE-2025-65821: Security feature bypass in n/a

> Attackers can dump flash memory and reflash devices with malicious firmware because UART download mode remains enabled on ESP32 chips.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Dec 2025
- **Updated:** 11 Dec 2025
- **Also known as:** GHSA-v8wv-p3hj-xf64

## What is CVE-2025-65821?

CVE-2025-65821 is a high-severity vulnerability in n/a, published on 10 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

As UART download mode is still enabled on the ESP32 chip on which the firmware runs, an adversary can dump the flash from the device and retrieve sensitive information such as details about the current and previous Wi-Fi network from the NVS partition. Additionally, this allows the adversary to reflash the device with their own firmware which may contain malicious modifications.

Weakness: CWE-1191 (On-Chip Debug and Test Interface With Improper Access Control)

## Which versions are affected by CVE-2025-65821?

It affects 1 product.


Products: Meatmeet Meatmeet Pro Wifi \& Bluetooth Meat Thermometer Firmware.

## How do I fix CVE-2025-65821?

No fix has been published for CVE-2025-65821 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-65821 being exploited?

There is no known exploitation of CVE-2025-65821 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2025-65823](https://insights.sbomify.com/CVE-2025-65823/): Hardcoded credentials in n/a (critical 9.8)
- [CVE-2025-65824](https://insights.sbomify.com/CVE-2025-65824/): Missing authorization in n/a (high 8.8)
- [CVE-2025-65822](https://insights.sbomify.com/CVE-2025-65822/): Security feature bypass in n/a (medium 6.8)
- [CVE-2025-65829](https://insights.sbomify.com/CVE-2025-65829/): Security feature bypass in n/a (medium 6.8)
- [CVE-2025-65828](https://insights.sbomify.com/CVE-2025-65828/): Missing authorization in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-65821 and fix it if it is affected.

What it is: CVE-2025-65821 is a high-severity vulnerability in n/a, published on 10 Dec 2025. 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-2025-65821 in the wild and no public exploit code.

Affected product: n/a. 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-2025-65821/ (Markdown: https://insights.sbomify.com/CVE-2025-65821/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-65821
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-65821
- OSV: https://osv.dev/vulnerability/CVE-2025-65821

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-65821/
Summaries are generated and may contain mistakes; the official description above is the record.