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Vulnerabilities

Vulnerability · CVE-2025-66276

QuTS hero is not affected.

Published Jun 10, 2026 · catalog updated Jul 23, 2026 · QuTS hero is not

Last checked Nov 9, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-66276. EPSS is 0.29%. Act only if a listed version of QuTS hero is not is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (QuTS hero is not).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.29%
Remediation
Version ranges on file
Affected products
cpe qnap/qts

QuTS hero is not affected. We have already fixed the vulnerability in the following version: QTS 5.2.7.3256 build 20250913 and later

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe qnap/qts< 5.2.7.3256

How to fix CVE-2025-66276

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-66276. EPSS is 0.29%. Act only if a listed version of QuTS hero is not is installed.

Which versions are affected?

Compare what you have installed with < 5.2.7.3256. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.29%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

QNAP QTS security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 10, 2026 · Monitored products — high

    Detected

    QuTS hero is not affected. We have already fixed the vulnerability in the following version: QTS 5.2.7.3256 build 20250913 and later

  2. Jul 23, 2026 · Monitored products — high

    Updated

    QuTS hero is not affected. We have already fixed the vulnerability in the following version: QTS 5.2.7.3256 build 20250913 and later

Sources

  • CVE.orgVulnerability recordCVE-2025-66276

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2025-66276

    QuTS hero is not affected. We have already fixed the vulnerability in the following version: QTS 5.2.7.3256 build 20250913 and later

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 9, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 7, 2026
  • Monitored products — highNov 6, 2026