# CVE-2025-25609: Memory corruption in n/a

> A buffer overflow in the TOTOLink A3002R router allows attackers to execute arbitrary code or cause a denial of service via the static_ipv6 parameter.

- **Severity:** High 8.0 (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 28 Feb 2025
- **Updated:** 5 Mar 2025
- **Also known as:** GHSA-5g74-67hf-f7fv

## What is CVE-2025-25609?

CVE-2025-25609 is a high-severity memory corruption vulnerability in Totolink A3002r Firmware, published on 28 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

TOTOlink A3002R V1.1.1-B20200824.0128 contains a buffer overflow vulnerability. The vulnerability arises from the improper input validation of the static_ipv6 parameter in the formIpv6Setup interface of /bin/boa

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

## Which versions are affected by CVE-2025-25609?

It affects 1 product.


Products: Totolink A3002r Firmware.

## How do I fix CVE-2025-25609?

No fix has been published for CVE-2025-25609 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-25609 being exploited?

There is no known exploitation of CVE-2025-25609 in the wild and no public exploit code.

## Other vulnerabilities in Totolink A3002r Firmware

- [CVE-2025-55591](https://insights.sbomify.com/CVE-2025-55591/): Command injection in n/a (critical 9.8)
- [CVE-2025-45858](https://insights.sbomify.com/CVE-2025-45858/): Command injection in n/a (critical 9.8)
- [CVE-2025-45861](https://insights.sbomify.com/CVE-2025-45861/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-45863](https://insights.sbomify.com/CVE-2025-45863/): Memory corruption in n/a (critical 9.8)
- [CVE-2025-45865](https://insights.sbomify.com/CVE-2025-45865/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-25609 and fix it if it is affected.

What it is: CVE-2025-25609 is a high-severity memory corruption vulnerability in Totolink A3002r Firmware, published on 28 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-25609 in the wild and no public exploit code.

Affected product: Totolink A3002r 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-2025-25609/ (Markdown: https://insights.sbomify.com/CVE-2025-25609/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-25609
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-25609
- OSV: https://osv.dev/vulnerability/CVE-2025-25609

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-25609/
Summaries are generated and may contain mistakes; the official description above is the record.