How severe is CVE-2025-9624?

CVE-2025-9624 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-9624 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9624?

CVE-2025-9624 affects Amazon Opensearch. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9624?

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-2025-9624 have an EU (EUVD) identifier?

Yes. CVE-2025-9624 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199644.

When was CVE-2025-9624 published?

CVE-2025-9624 was published on 2025-11-25 and last updated on 2026-06-17.

CVE-2025-9624

CVE-2025-9624 is a high-severity vulnerability in Amazon Opensearch with a CVSS 3.x base score of 7.5. 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-674.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v4: 8.3
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199644
Weakness: CWE-674
Affected product: Amazon Opensearch
Published: 2025-11-25
Last modified: 2026-06-17

Description

A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string inputs. This issue affects all OpenSearch versions between 3.0.0 and < 3.3.0 and OpenSearch < 2.19.4.

Frequently asked questions

What is CVE-2025-9624?: A vulnerability in OpenSearch allows attackers to cause Denial of Service (DoS) by submitting complex query_string inputs. This issue affects all OpenSearch versions between 3.0.0 and < 3.3.0 and OpenSearch < 2.19.4.
How severe is CVE-2025-9624?: CVE-2025-9624 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-9624 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9624?: CVE-2025-9624 affects Amazon Opensearch. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9624?: 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-2025-9624 have an EU (EUVD) identifier?: Yes. CVE-2025-9624 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199644.
When was CVE-2025-9624 published?: CVE-2025-9624 was published on 2025-11-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:amazon:opensearch:*:*:*:*:*:*:*:*

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