# CVE-2025-7914: Tenda AC6 httpd setparentcontrolinfo buffer overflow

> A remote buffer overflow in the Tenda AC6 router's httpd service allows attackers to execute arbitrary code.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Jul 2025
- **Updated:** 21 Jul 2025
- **Also known as:** GHSA-wq2q-3cwm-29r2

## What is CVE-2025-7914?

CVE-2025-7914 is a high-severity memory corruption vulnerability in Tenda Ac6 Firmware, published on 21 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability has been found in Tenda AC6 15.03.06.50 and classified as critical. Affected by this vulnerability is the function setparentcontrolinfo of the component httpd. The manipulation leads to buffer overflow. The attack can be launched remotely.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-7914?

It affects 1 product.


Products: Tenda Ac6 Firmware.

## How do I fix CVE-2025-7914?

No fix has been published for CVE-2025-7914 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-7914 being exploited?

There is no known exploitation of CVE-2025-7914 in the wild and no public exploit code.

## 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-2025-7914 and fix it if it is affected.

What it is: CVE-2025-7914 is a high-severity memory corruption vulnerability in Tenda Ac6 Firmware, published on 21 Jul 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-7914 in the wild and no public exploit code.

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-2025-7914/ (Markdown: https://insights.sbomify.com/CVE-2025-7914/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-7914
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-7914
- OSV: https://osv.dev/vulnerability/CVE-2025-7914

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-7914/
Summaries are generated and may contain mistakes; the official description above is the record.