Summary iPlain-English security verdict for QTS, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
QTS currently scores 44/100 — high risk. No tracked vulnerabilities are currently known to be exploited in the wild. Upgrade soon — serious vulnerabilities are open and a fix usually exists.
Disclosure trend iNew CVEs published for QTS each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2025-66276 CRITICAL EPSS 0% → fixed in 5.2.7.3256Get alerted about QTS
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Frequently asked
Is QTS safe and patched?
QTS currently scores 44/100 — high risk. No tracked vulnerabilities are currently known to be exploited in the wild. Upgrade soon — serious vulnerabilities are open and a fix usually exists.
What should I do about QTS now?
Review the patch-priority list, apply the available fixes (or move to the latest release), and confirm against QNAP's official advisory.
Why is QTS listed on IsItPatched?
QTS was added automatically because CISA's Known Exploited Vulnerabilities (KEV) catalog flagged it as actively exploited in the wild. IsItPatched tracks its known CVEs, severity (CVSS), exploitation probability (EPSS) and KEV status from public data; its version and lifecycle mapping is verified over time.
lifecycle unknown — needs latest supported version
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against QNAP's official advisory before you patch or upgrade.