# CVE-2025-67073: Memory corruption in n/a

> Remote attackers can cause denial of service and potentially execute code on Tenda AC10 routers via a buffer overflow in the httpd service.

- **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:** 17 Dec 2025
- **Updated:** 17 Dec 2025
- **Also known as:** GHSA-mwc7-76g4-3ffm

## What is CVE-2025-67073?

CVE-2025-67073 is a critical memory corruption vulnerability in Tenda Ac10 Firmware, published on 17 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A Buffer overflow vulnerability in function fromAdvSetMacMtuWan of bin httpd in Tenda AC10V4.0 V16.03.10.20 allows remote attackers to cause denial of service and possibly code execution by sending a post request with a crafted payload (field `serviceName`) to /goform/AdvSetMacMtuWan.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2025-67073?

It affects 1 product.


Products: Tenda Ac10 Firmware.

## How do I fix CVE-2025-67073?

No fix has been published for CVE-2025-67073 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-67073 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-67073 exists.

## Other vulnerabilities in Tenda Ac10 Firmware

- [CVE-2018-14558](https://insights.sbomify.com/CVE-2018-14558/): Tenda AC7, AC9, and AC10 Routers Command Injection (critical 9.8, exploited in the wild)
- [CVE-2025-45779](https://insights.sbomify.com/CVE-2025-45779/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-25456](https://insights.sbomify.com/CVE-2025-25456/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-25674](https://insights.sbomify.com/CVE-2025-25674/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-25675](https://insights.sbomify.com/CVE-2025-25675/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-67073 and fix it if it is affected.

What it is: CVE-2025-67073 is a critical memory corruption vulnerability in Tenda Ac10 Firmware, published on 17 Dec 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-2025-67073 exists.

Affected product: Tenda Ac10 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-2025-67073/ (Markdown: https://insights.sbomify.com/CVE-2025-67073/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-67073
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-67073
- OSV: https://osv.dev/vulnerability/CVE-2025-67073

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-67073/
Summaries are generated and may contain mistakes; the official description above is the record.