# CVE-2024-4252: Tenda i22 formSetUrlFilterRule stack-based overflow

> Remote attackers can trigger a stack-based buffer overflow in the Tenda i22 router via the formSetUrlFilterRule function, potentially leading to code execution.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 27 Apr 2024
- **Updated:** 1 Aug 2024
- **Also known as:** GHSA-cgq2-cjx2-777w

## What is CVE-2024-4252?

CVE-2024-4252 is a high-severity memory corruption vulnerability in Tenda i22, published on 27 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability classified as critical has been found in Tenda i22 1.0.0.3(4687). This affects the function formSetUrlFilterRule. The manipulation of the argument groupIndex leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The associated identifier of this vulnerability is VDB-262143. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2024-4252?

It affects 1 product.


Products: Tenda I22 Firmware.

## How do I fix CVE-2024-4252?

No fix has been published for CVE-2024-4252 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-4252 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-4252 exists.

## Other vulnerabilities in Tenda i22

- [CVE-2025-9297](https://insights.sbomify.com/CVE-2025-9297/): Tenda i22 wxportalauth formWeixinAuthInfoGet stack-based overflow (high 8.7)
- [CVE-2024-7582](https://insights.sbomify.com/CVE-2024-7582/): Tenda i22 apPortalAccessCodeAuth formApPortalAccessCodeAuth buffer overflow (high 8.7)
- [CVE-2024-7583](https://insights.sbomify.com/CVE-2024-7583/): Tenda i22 apPortalOneKeyAuth formApPortalOneKeyAuth buffer overflow (high 8.7)
- [CVE-2024-7584](https://insights.sbomify.com/CVE-2024-7584/): Tenda i22 apPortalPhoneAuth formApPortalPhoneAuth buffer overflow (high 8.7)
- [CVE-2024-7585](https://insights.sbomify.com/CVE-2024-7585/): Tenda i22 apPortalAuth formApPortalWebAuth buffer overflow (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-4252 and fix it if it is affected.

What it is: CVE-2024-4252 is a high-severity memory corruption vulnerability in Tenda i22, published on 27 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-4252 exists.

Affected product: Tenda i22. 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-2024-4252/ (Markdown: https://insights.sbomify.com/CVE-2024-4252/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-4252
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-4252
- OSV: https://osv.dev/vulnerability/CVE-2024-4252

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-4252/
Summaries are generated and may contain mistakes; the official description above is the record.