# CVE-2025-50262: Memory corruption in n/a

> A buffer overflow in the Tenda AC6 router allows attackers to execute arbitrary code or cause a denial of service via the list parameter.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:** 3 Jul 2025
- **Updated:** 3 Jul 2025
- **Also known as:** GHSA-73r8-cfhc-ffw6

## What is CVE-2025-50262?

CVE-2025-50262 is a high-severity memory corruption vulnerability in Tenda Ac6 Firmware, published on 3 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Tenda AC6 v15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetQosBand function via the list parameter.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2025-50262?

It affects 1 product.


Products: Tenda Ac6 Firmware.

## How do I fix CVE-2025-50262?

No fix has been published for CVE-2025-50262 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-50262 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-50262 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-2025-50262 and fix it if it is affected.

What it is: CVE-2025-50262 is a high-severity memory corruption vulnerability in Tenda Ac6 Firmware, published on 3 Jul 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-2025-50262 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-2025-50262/ (Markdown: https://insights.sbomify.com/CVE-2025-50262/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-50262
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-50262
- OSV: https://osv.dev/vulnerability/CVE-2025-50262

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-50262/
Summaries are generated and may contain mistakes; the official description above is the record.