CVE-2025-66276 QTS
Critical 9.2
Published
Updated
Check this codebase for CVE-2025-66276 and fix it if it is affected.
What it is: CVE-2025-66276 is a critical vulnerability in Qnap Qts, published on 10 Jun 2026.
Exploitation: There is no known exploitation of CVE-2025-66276 in the wild and no public exploit code.
Affected product: Qnap Qts. 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-2025-66276/ (Markdown: https://insights.sbomify.com/CVE-2025-66276/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2025-66276?
CVE-2025-66276 is a critical vulnerability in Qnap Qts, published on 10 Jun 2026.
Official description
QuTS hero is not affected.
We have already fixed the vulnerability in the following version: QTS 5.2.7.3256 build 20250913 and later
Which versions are affected by CVE-2025-66276?
It affects 1 product.
Products include Qnap Qts.
How do I fix CVE-2025-66276?
No fix has been published for CVE-2025-66276 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-66276 being exploited?
There is no known exploitation of CVE-2025-66276 in the wild and no public exploit code.
Other vulnerabilities in Qnap Qts
Sources
Also known as GHSA-67cg-rrvw-5r8m.