# CVE-2025-67189: Memory corruption in n/a

> A remote attacker can exploit a buffer overflow in the setParentalRules interface to cause denial of service or execute arbitrary code on TOTOLINK A950RG routers.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Feb 2026
- **Updated:** 9 Feb 2026
- **Also known as:** GHSA-27qh-whg4-7h58

## What is CVE-2025-67189?

CVE-2025-67189 is a medium-severity memory corruption vulnerability in n/a, published on 3 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A buffer overflow vulnerability exists in the setParentalRules interface of TOTOLINK A950RG V4.1.2cu.5204_B20210112. The urlKeyword parameter is not properly validated, and the function concatenates multiple user-controlled fields into a fixed-size stack buffer without performing boundary checks. A remote attacker can exploit this flaw to cause denial of service or potentially achieve arbitrary code execution.

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

## Which versions are affected by CVE-2025-67189?

It affects 1 product.


Products: Totolink A950rg Firmware.

## How do I fix CVE-2025-67189?

No fix has been published for CVE-2025-67189 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-67189 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-67189 exists.

## Other vulnerabilities in n/a

- [CVE-2025-67186](https://insights.sbomify.com/CVE-2025-67186/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-67187](https://insights.sbomify.com/CVE-2025-67187/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-67188](https://insights.sbomify.com/CVE-2025-67188/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-45800](https://insights.sbomify.com/CVE-2025-45800/): Command injection in n/a (critical 9.8)
- [CVE-2022-25082](https://insights.sbomify.com/CVE-2022-25082/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-67189 and fix it if it is affected.

What it is: CVE-2025-67189 is a medium-severity memory corruption vulnerability in n/a, published on 3 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-67189 exists.

Affected product: n/a. 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-2025-67189/ (Markdown: https://insights.sbomify.com/CVE-2025-67189/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-67189
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-67189
- OSV: https://osv.dev/vulnerability/CVE-2025-67189

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-67189/
Summaries are generated and may contain mistakes; the official description above is the record.