# CVE-2025-30277: Qsync Central

> Remote attackers with user accounts can bypass certificate validation in Qsync Central, compromising system security.

- **Severity:** High 8.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H`)
- **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:** 29 Aug 2025
- **Updated:** 29 Aug 2025
- **Also known as:** GHSA-93vp-2j2q-f8fx

## What is CVE-2025-30277?

CVE-2025-30277 is a high-severity vulnerability in Qnap Qsync Central, published on 29 Aug 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An improper certificate validation vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to compromise the security of the system.

We have already fixed the vulnerability in the following version:
Qsync Central 4.5.0.7 ( 2025/04/23 ) and later

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2025-30277?

It affects 1 product.


Products: Qnap Qsync Central.

## How do I fix CVE-2025-30277?

No fix has been published for CVE-2025-30277 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-30277 being exploited?

There is no known exploitation of CVE-2025-30277 in the wild and no public exploit code.

## Other vulnerabilities in Qnap Qsync Central

- [CVE-2025-29892](https://insights.sbomify.com/CVE-2025-29892/): Qsync Central (high 8.7)
- [CVE-2025-53595](https://insights.sbomify.com/CVE-2025-53595/): Qsync Central (high 8.6)
- [CVE-2025-54153](https://insights.sbomify.com/CVE-2025-54153/): Qsync Central (high 8.6)
- [CVE-2025-30278](https://insights.sbomify.com/CVE-2025-30278/): Qsync Central (high 8.3)
- [CVE-2023-47564](https://insights.sbomify.com/CVE-2023-47564/): Qsync Central (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-30277 and fix it if it is affected.

What it is: CVE-2025-30277 is a high-severity vulnerability in Qnap Qsync Central, published on 29 Aug 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-30277 in the wild and no public exploit code.

Affected product: Qnap Qsync Central. 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-2025-30277/ (Markdown: https://insights.sbomify.com/CVE-2025-30277/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-30277
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-30277
- OSV: https://osv.dev/vulnerability/CVE-2025-30277

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-30277/
Summaries are generated and may contain mistakes; the official description above is the record.