# CVE-2025-3802: Tenda W12/i24 httpd cgiPingSet stack-based overflow

> Remote attackers can trigger a stack-based buffer overflow in the httpd service via the pingIP argument, potentially leading to arbitrary code execution on Tenda W12 and i24 routers.

- **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`)
- **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:** 19 Apr 2025
- **Updated:** 21 Apr 2025
- **Also known as:** GHSA-5hmc-37pv-999m

## What is CVE-2025-3802?

CVE-2025-3802 is a high-severity memory corruption vulnerability in Tenda W12, published on 19 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was found in Tenda W12 and i24 3.0.0.4(2887)/3.0.0.5(3644). It has been declared as critical. This vulnerability affects the function cgiPingSet of the file /bin/httpd. The manipulation of the argument pingIP leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-121 (Stack-based Buffer Overflow), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-3802?

It affects 2 products.


Products: Tenda I24 Firmware, Tenda W12 Firmware.

## How do I fix CVE-2025-3802?

No fix has been published for CVE-2025-3802 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-3802 being exploited?

There is no known exploitation of CVE-2025-3802 in the wild and no public exploit code.

## Other vulnerabilities in Tenda W12

- [CVE-2024-57483](https://insights.sbomify.com/CVE-2024-57483/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-4007](https://insights.sbomify.com/CVE-2025-4007/): Tenda W12/i24 httpd modules cgidhcpsCfgSet stack-based overflow (high 8.7)
- [CVE-2025-3803](https://insights.sbomify.com/CVE-2025-3803/): Tenda W12/i24 httpd cgiSysScheduleRebootSet stack-based overflow (high 8.7)
- [CVE-2025-3820](https://insights.sbomify.com/CVE-2025-3820/): Tenda W12/i24 httpd cgiSysUplinkCheckSet stack-based overflow (high 8.7)
- [CVE-2025-70798](https://insights.sbomify.com/CVE-2025-70798/): Hardcoded credentials in n/a (high 8.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-3802 and fix it if it is affected.

What it is: CVE-2025-3802 is a high-severity memory corruption vulnerability in Tenda W12, published on 19 Apr 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-2025-3802 in the wild and no public exploit code.

Affected product: Tenda W12. 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-2025-3802/ (Markdown: https://insights.sbomify.com/CVE-2025-3802/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-3802
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-3802
- OSV: https://osv.dev/vulnerability/CVE-2025-3802

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-3802/
Summaries are generated and may contain mistakes; the official description above is the record.