How severe is CVE-2026-4027?

CVE-2026-4027 has a CVSS 4.0 base score of 7.1, rated high severity.

Is CVE-2026-4027 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4027?

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

Does CVE-2026-4027 have an EU (EUVD) identifier?

Yes. CVE-2026-4027 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38021.

When was CVE-2026-4027 published?

CVE-2026-4027 was published on 2026-06-19 and last updated on 2026-06-22.

CVE-2026-4027

CVE-2026-4027 is a high-severity vulnerability with a CVSS 4.0 base score of 7.1. 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-284.

Key facts

Severity: High (CVSS 4.0 base score 7.1)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38021
Weakness: CWE-284
Published: 2026-06-19
Last modified: 2026-06-22

Description

A security vulnerability has been identified in FlexNet Manager Suite 2025 R1 and R2 that could allow unauthorized access to attachment files due to insufficient access control.

Frequently asked questions

What is CVE-2026-4027?: A security vulnerability has been identified in FlexNet Manager Suite 2025 R1 and R2 that could allow unauthorized access to attachment files due to insufficient access control.
How severe is CVE-2026-4027?: CVE-2026-4027 has a CVSS 4.0 base score of 7.1, rated high severity.
Is CVE-2026-4027 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4027?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-4027 have an EU (EUVD) identifier?: Yes. CVE-2026-4027 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38021.
When was CVE-2026-4027 published?: CVE-2026-4027 was published on 2026-06-19 and last updated on 2026-06-22.

References

https://community.flexera.com/s/feed/0D5PL00000ssjNi0AI

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