# CVE-2025-20654: Memory corruption in MT6890, MT7622, MT7915, MT7916, MT7981, MT7986

> A remote attacker can execute arbitrary code via an out-of-bounds write in MediaTek Wi-Fi firmware without user interaction.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Apr 2025
- **Updated:** 26 Feb 2026
- **Also known as:** GHSA-xrqc-54h4-vmvv

## What is CVE-2025-20654?

CVE-2025-20654 is a critical memory corruption vulnerability in Mediatek Software Development Kit, published on 7 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In wlan service, there is a possible out of bounds write due to an incorrect bounds check. This could lead to remote code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00406897; Issue ID: MSV-2875.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2025-20654?

It affects 8 products.


Products: Mediatek Mt6890, Mediatek Mt7622, Mediatek Mt7915, Mediatek Mt7916, Mediatek Mt7981, Mediatek Mt7986, Mediatek Software Development Kit, Openwrt Openwrt.

## How do I fix CVE-2025-20654?

No fix has been published for CVE-2025-20654 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-20654 being exploited?

There is no known exploitation of CVE-2025-20654 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-20654 and fix it if it is affected.

What it is: CVE-2025-20654 is a critical memory corruption vulnerability in Mediatek Software Development Kit, published on 7 Apr 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-2025-20654 in the wild and no public exploit code.

Affected product: Mediatek Software Development Kit. 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-2025-20654/ (Markdown: https://insights.sbomify.com/CVE-2025-20654/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-20654
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-20654
- OSV: https://osv.dev/vulnerability/CVE-2025-20654

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-20654/
Summaries are generated and may contain mistakes; the official description above is the record.