# CVE-2025-0848: Tenda A18 HTTP POST Request SetCmdlineRun stack-based overflow

> Remote attackers can trigger a stack-based buffer overflow in the Tenda A18 router via a crafted HTTP POST request, potentially leading to arbitrary code execution.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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:** 30 Jan 2025
- **Updated:** 30 Jan 2025
- **Also known as:** GHSA-wm69-gq95-wfj3

## What is CVE-2025-0848?

CVE-2025-0848 is a high-severity memory corruption vulnerability in Tenda A18, published on 30 Jan 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 A18 up to 15.13.07.09. It has been rated as critical. This issue affects the function SetCmdlineRun of the file /goform/SetCmdlineRun of the component HTTP POST Request Handler. The manipulation of the argument wpapsk_crypto5g leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-121 (Stack-based Buffer Overflow), CWE-787 (Out-of-bounds Write), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2025-0848?

It affects 1 product.


Products: Tenda A18 Firmware.

## How do I fix CVE-2025-0848?

No fix has been published for CVE-2025-0848 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-0848 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-0848 exists.

## Other vulnerabilities in Tenda A18

- [CVE-2023-50585](https://insights.sbomify.com/CVE-2023-50585/): Memory corruption in n/a (critical 9.8)
- [CVE-2024-32305](https://insights.sbomify.com/CVE-2024-32305/): Memory corruption in n/a (high 8.8)
- [CVE-2026-2876](https://insights.sbomify.com/CVE-2026-2876/): Tenda A18 setBlackRule parse_macfilter_rule stack-based overflow (high 8.7)
- [CVE-2026-2877](https://insights.sbomify.com/CVE-2026-2877/): Tenda A18 Httpd Service WifiExtraSet strcpy stack-based overflow (high 8.7)
- [CVE-2023-39827](https://insights.sbomify.com/CVE-2023-39827/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-0848 and fix it if it is affected.

What it is: CVE-2025-0848 is a high-severity memory corruption vulnerability in Tenda A18, published on 30 Jan 2025. 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-2025-0848 exists.

Affected product: Tenda A18. 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-2025-0848/ (Markdown: https://insights.sbomify.com/CVE-2025-0848/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-0848
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-0848
- OSV: https://osv.dev/vulnerability/CVE-2025-0848

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-0848/
Summaries are generated and may contain mistakes; the official description above is the record.