# CVE-2025-29135: Memory corruption in n/a

> Remote attackers can execute arbitrary code on Tenda AC7 routers via a stack-based buffer overflow in the formWifiBasicSet function.

- **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:** 24 Mar 2025
- **Updated:** 26 Mar 2025
- **Also known as:** GHSA-v767-x36h-4gv8

## What is CVE-2025-29135?

CVE-2025-29135 is a critical memory corruption vulnerability in Tenda Ac7 Firmware, published on 24 Mar 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A stack-based buffer overflow vulnerability in Tenda AC7 V15.03.06.44 allows a remote attacker to execute arbitrary code through a stack overflow attack using the security parameter of the formWifiBasicSet function.

Weakness: CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2025-29135?

It affects 1 product.


Products: Tenda Ac7 Firmware.

## How do I fix CVE-2025-29135?

No fix has been published for CVE-2025-29135 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-29135 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-29135 exists.

## Other vulnerabilities in Tenda Ac7 Firmware

- [CVE-2026-51843](https://insights.sbomify.com/CVE-2026-51843/): Memory corruption in n/a (critical 9.8)
- [CVE-2026-51844](https://insights.sbomify.com/CVE-2026-51844/): Memory corruption in n/a (critical 9.8)
- [CVE-2026-51845](https://insights.sbomify.com/CVE-2026-51845/): Memory corruption in n/a (critical 9.8)
- [CVE-2026-51846](https://insights.sbomify.com/CVE-2026-51846/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-29137](https://insights.sbomify.com/CVE-2025-29137/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-29135 and fix it if it is affected.

What it is: CVE-2025-29135 is a critical memory corruption vulnerability in Tenda Ac7 Firmware, published on 24 Mar 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-2025-29135 exists.

Affected product: Tenda Ac7 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-2025-29135/ (Markdown: https://insights.sbomify.com/CVE-2025-29135/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-29135
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-29135
- OSV: https://osv.dev/vulnerability/CVE-2025-29135

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-29135/
Summaries are generated and may contain mistakes; the official description above is the record.