CVE-2025-66276
QuTS hero not affected; QTS patch 5.2.7.3256+ available.
Is CVE-2025-66276 being exploited?
Not confirmed. CVE-2025-66276 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2025-66276?
CVE-2025-66276 is rated Critical with a CVSS score of 9.2. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2025-66276?
Yes. A fix has been recorded for CVE-2025-66276. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What should I do about CVE-2025-66276?
Upgrade to QTS 5.2.7.3256+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
No exploitable surface; no affected product listed; remediation via patch.
Patch when possible
- affected>= 5.2.0 and < 5.2.7.3256 build 20250913
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.