# CVE-2025-6621: TOTOLINK CA300-PoE ap.so QuickSetting os command injection

> Remote attackers can execute arbitrary OS commands via the QuickSetting function in TOTOLINK CA300-PoE devices.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **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:** 25 Jun 2025
- **Updated:** 26 Jun 2025
- **Also known as:** GHSA-8pmg-2x8v-mfv9

## What is CVE-2025-6621?

CVE-2025-6621 is a medium-severity command injection vulnerability in TOTOLINK CA300-PoE, published on 25 Jun 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability classified as critical has been found in TOTOLINK CA300-PoE 6.2c.884. This affects the function QuickSetting of the file ap.so. The manipulation of the argument hour/minute leads to os command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2025-6621?

It affects 1 product.


Products: Totolink Ca300-Poe Firmware.

## How do I fix CVE-2025-6621?

No fix has been published for CVE-2025-6621 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-6621 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6621 exists.

## Other vulnerabilities in TOTOLINK CA300-PoE

- [CVE-2023-24159](https://insights.sbomify.com/CVE-2023-24159/): Command injection in n/a (critical 9.8)
- [CVE-2023-24160](https://insights.sbomify.com/CVE-2023-24160/): Command injection in n/a (critical 9.8)
- [CVE-2023-24161](https://insights.sbomify.com/CVE-2023-24161/): Command injection in n/a (critical 9.8)
- [CVE-2023-24138](https://insights.sbomify.com/CVE-2023-24138/): Command injection in n/a (critical 9.8)
- [CVE-2023-24139](https://insights.sbomify.com/CVE-2023-24139/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-6621 and fix it if it is affected.

What it is: CVE-2025-6621 is a medium-severity command injection vulnerability in TOTOLINK CA300-PoE, published on 25 Jun 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-2025-6621 exists.

Affected product: TOTOLINK CA300-PoE. 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-2025-6621/ (Markdown: https://insights.sbomify.com/CVE-2025-6621/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-6621
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-6621
- OSV: https://osv.dev/vulnerability/CVE-2025-6621

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-6621/
Summaries are generated and may contain mistakes; the official description above is the record.