# CVE-2025-57528: Denial of service in n/a

> Attackers can cause a denial of service on Tenda AC6 routers by sending crafted parameters to the SetCfm endpoint.

- **Severity:** High 7.7 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 Sep 2025
- **Updated:** 19 Sep 2025
- **Also known as:** GHSA-7hfx-hmgj-p66f

## What is CVE-2025-57528?

CVE-2025-57528 is a high-severity denial of service vulnerability in Tenda Ac6 Firmware, published on 19 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in Tenda AC6 US_AC6V1.0BR_V15.03.05.16_multi_TD01 allowing attackers to cause a denial of service via the funcname, funcpara1, funcpara2 parameters to the formSetCfm function (uri path: SetCfm).

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2025-57528?

It affects 1 product.


Products: Tenda Ac6 Firmware.

## How do I fix CVE-2025-57528?

No fix has been published for CVE-2025-57528 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-57528 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-57528 exists.

## Other vulnerabilities in Tenda Ac6 Firmware

- [CVE-2025-27129](https://insights.sbomify.com/CVE-2025-27129/): Auth bypass in AC6 V5.0 (critical 9.8)
- [CVE-2025-29029](https://insights.sbomify.com/CVE-2025-29029/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-29030](https://insights.sbomify.com/CVE-2025-29030/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-29031](https://insights.sbomify.com/CVE-2025-29031/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-25343](https://insights.sbomify.com/CVE-2025-25343/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-57528 and fix it if it is affected.

What it is: CVE-2025-57528 is a high-severity denial of service vulnerability in Tenda Ac6 Firmware, published on 19 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-57528 exists.

Affected product: Tenda Ac6 Firmware. 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-2025-57528/ (Markdown: https://insights.sbomify.com/CVE-2025-57528/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-57528
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-57528
- OSV: https://osv.dev/vulnerability/CVE-2025-57528

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-57528/
Summaries are generated and may contain mistakes; the official description above is the record.