# CVE-2024-0996: Tenda i9 httpd setcfm formSetCfm stack-based overflow

> Remote attackers can trigger a stack-based buffer overflow in the Tenda i9 router's httpd service via the setcfm form, potentially leading to code execution.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Jan 2024
- **Updated:** 17 Jun 2025
- **Also known as:** GHSA-4qcw-hfhw-j23m

## What is CVE-2024-0996?

CVE-2024-0996 is a high-severity memory corruption vulnerability in Tenda i9, published on 29 Jan 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability classified as critical has been found in Tenda i9 1.0.0.9(4122). This affects the function formSetCfm of the file /goform/setcfm of the component httpd. The manipulation of the argument funcpara1 leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-252261 was assigned to this vulnerability. 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-2024-0996?

It affects 1 product.


Products: Tenda I9 Firmware.

## How do I fix CVE-2024-0996?

No fix has been published for CVE-2024-0996 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-0996 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0996 exists.

## Other vulnerabilities in Tenda i9

- [CVE-2022-40100](https://insights.sbomify.com/CVE-2022-40100/): Command injection in n/a (critical 9.8)
- [CVE-2022-40101](https://insights.sbomify.com/CVE-2022-40101/): Memory corruption in n/a (high 7.5)
- [CVE-2022-40102](https://insights.sbomify.com/CVE-2022-40102/): Memory corruption in n/a (high 7.5)
- [CVE-2022-40104](https://insights.sbomify.com/CVE-2022-40104/): Memory corruption in n/a (high 7.5)
- [CVE-2022-40105](https://insights.sbomify.com/CVE-2022-40105/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-0996 and fix it if it is affected.

What it is: CVE-2024-0996 is a high-severity memory corruption vulnerability in Tenda i9, published on 29 Jan 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-0996 exists.

Affected product: Tenda i9. 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-2024-0996/ (Markdown: https://insights.sbomify.com/CVE-2024-0996/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-0996
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-0996
- OSV: https://osv.dev/vulnerability/CVE-2024-0996

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-0996/
Summaries are generated and may contain mistakes; the official description above is the record.