How severe is CVE-2023-45859?

CVE-2023-45859 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2023-45859 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45859?

CVE-2023-45859 affects Hazelcast. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-45859?

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-2023-45859 have an EU (EUVD) identifier?

Yes. CVE-2023-45859 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0767.

When was CVE-2023-45859 published?

CVE-2023-45859 was published on 2024-02-28 and last updated on 2026-06-17.

CVE-2023-45859

CVE-2023-45859 is a high-severity vulnerability in Hazelcast with a CVSS 3.x base score of 7.6. 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-922.

Key facts

Severity: High (CVSS 3.x base score 7.6)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0767
Weakness: CWE-922
Affected product: Hazelcast
Published: 2024-02-28
Last modified: 2026-06-17

Description

In Hazelcast through 4.1.10, 4.2 through 4.2.8, 5.0 through 5.0.5, 5.1 through 5.1.7, 5.2 through 5.2.4, and 5.3 through 5.3.2, some client operations don't check permissions properly, allowing authenticated users to access data stored in the cluster.

Frequently asked questions

What is CVE-2023-45859?: In Hazelcast through 4.1.10, 4.2 through 4.2.8, 5.0 through 5.0.5, 5.1 through 5.1.7, 5.2 through 5.2.4, and 5.3 through 5.3.2, some client operations don't check permissions properly, allowing authenticated users to access data stored in the cluster.
How severe is CVE-2023-45859?: CVE-2023-45859 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2023-45859 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45859?: CVE-2023-45859 affects Hazelcast. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-45859?: 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-2023-45859 have an EU (EUVD) identifier?: Yes. CVE-2023-45859 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0767.
When was CVE-2023-45859 published?: CVE-2023-45859 was published on 2024-02-28 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:hazelcast:hazelcast:*:*:*:*:*:*:*:*

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