How severe is CVE-2025-62371?

CVE-2025-62371 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2025-62371 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-62371?

CVE-2025-62371 affects Amazon Opensearch Data Prepper. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-62371?

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-2025-62371 have an EU (EUVD) identifier?

Yes. CVE-2025-62371 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34680.

When was CVE-2025-62371 published?

CVE-2025-62371 was published on 2025-10-15 and last updated on 2026-06-17.

CVE-2025-62371

CVE-2025-62371 is a high-severity vulnerability in Amazon Opensearch Data Prepper with a CVSS 3.x base score of 7.4. 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-295.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-34680
Weakness: CWE-295
Affected product: Amazon Opensearch Data Prepper
Published: 2025-10-15
Last modified: 2026-06-17

Description

OpenSearch Data Prepper as an open source data collector for observability data. In versions prior to 2.12.2, the OpenSearch sink and source plugins in Data Prepper trust all SSL certificates by default when no certificate path is provided. Prior to this fix, the OpenSearch sink and source plugins would automatically use a trust all SSL strategy when connecting to OpenSearch clusters if no certificate path was explicitly configured. This behavior bypasses SSL certificate validation, potentially allowing attackers to intercept and modify data in transit through man-in-the-middle attacks. The vulnerability affects connections to OpenSearch when the cert parameter is not explicitly provided. This issue has been patched in version 2.12.2. As a workaround, users can add the cert parameter to their OpenSearch sink or source configuration with the path to the cluster's CA certificate.

Frequently asked questions

What is CVE-2025-62371?: OpenSearch Data Prepper as an open source data collector for observability data. In versions prior to 2.12.2, the OpenSearch sink and source plugins in Data Prepper trust all SSL certificates by default when no certificate path is provided. Prior to this fix, the OpenSearch sink and source plugins would automatically use a trust all SSL strategy when connecting to OpenSearch clusters if no certificate path was explicitly configured. This behavior bypasses SSL certificate validation, potentially allowing attackers to intercept and modify data in transit through man-in-the-middle attacks. The vulnerability affects connections to OpenSearch when the cert parameter is not explicitly provided. This issue has been patched in version 2.12.2. As a workaround, users can add the cert parameter to their OpenSearch sink or source configuration with the path to the cluster's CA certificate.
How severe is CVE-2025-62371?: CVE-2025-62371 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2025-62371 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-62371?: CVE-2025-62371 affects Amazon Opensearch Data Prepper. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-62371?: 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-2025-62371 have an EU (EUVD) identifier?: Yes. CVE-2025-62371 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-34680.
When was CVE-2025-62371 published?: CVE-2025-62371 was published on 2025-10-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:amazon:opensearch_data_prepper:*:*:*:*:*:*:*:*

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