How severe is CVE-2025-65865?

CVE-2025-65865 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-2025-65865 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-65865?

CVE-2025-65865 affects Eprosima Fast Dds. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-65865?

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-2025-65865 have an EU (EUVD) identifier?

Yes. CVE-2025-65865 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204858.

When was CVE-2025-65865 published?

CVE-2025-65865 was published on 2025-12-23 and last updated on 2026-07-05.

CVE-2025-65865

CVE-2025-65865 is a high-severity vulnerability in Eprosima Fast Dds 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-190.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-204858
Weakness: CWE-190
Affected product: Eprosima Fast Dds
Published: 2025-12-23
Last modified: 2026-07-05

Description

An integer overflow in eProsima Fast-DDS v3.3 allows attackers to cause a Denial of Service (DoS) via a crafted input.

Frequently asked questions

What is CVE-2025-65865?: An integer overflow in eProsima Fast-DDS v3.3 allows attackers to cause a Denial of Service (DoS) via a crafted input.
How severe is CVE-2025-65865?: CVE-2025-65865 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-2025-65865 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-65865?: CVE-2025-65865 affects Eprosima Fast Dds. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-65865?: 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-2025-65865 have an EU (EUVD) identifier?: Yes. CVE-2025-65865 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-204858.
When was CVE-2025-65865 published?: CVE-2025-65865 was published on 2025-12-23 and last updated on 2026-07-05.

References

EU advisories (EUVD)

Affected products (1)

cpe:2.3:a:eprosima:fast_dds:3.3.0:*:*:*:*:*:*:*

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