How severe is CVE-2026-41566?

CVE-2026-41566 has a CVSS 4.0 base score of 9.4, rated critical severity.

Is CVE-2026-41566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-41566?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-41566 have an EU (EUVD) identifier?

Yes. CVE-2026-41566 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39335.

When was CVE-2026-41566 published?

CVE-2026-41566 was published on 2026-06-25.

CVE-2026-41566

CVE-2026-41566 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-280.

Key facts

Severity: Critical (CVSS 4.0 base score 9.4)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-39335
Weakness: CWE-280
Published: 2026-06-25
Last modified: 2026-06-25

Description

Improper Handling of Insufficient Permissions or Privileges vulnerability in Apache Kvrocks. This issue affects Apache Kvrocks: 2.8.0. Users are recommended to upgrade to version 2.16.0, which fixes the issue.

Frequently asked questions

What is CVE-2026-41566?: Improper Handling of Insufficient Permissions or Privileges vulnerability in Apache Kvrocks. This issue affects Apache Kvrocks: 2.8.0. Users are recommended to upgrade to version 2.16.0, which fixes the issue.
How severe is CVE-2026-41566?: CVE-2026-41566 has a CVSS 4.0 base score of 9.4, rated critical severity.
Is CVE-2026-41566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-41566?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-41566 have an EU (EUVD) identifier?: Yes. CVE-2026-41566 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-39335.
When was CVE-2026-41566 published?: CVE-2026-41566 was published on 2026-06-25.

References

Other CWE-280 vulnerabilities

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CVE-2025-58770 — High (CVSS 8.8): APTIOV contains a vulnerability in BIOS where a user may cause “Improper Handling of Insufficient Permissions or…

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