How severe is CVE-2025-63829?

CVE-2025-63829 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-2025-63829 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-63829?

CVE-2025-63829 affects Eprosima Fast Dds. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-63829?

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-2025-63829 have an EU (EUVD) identifier?

Yes. CVE-2025-63829 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198035.

When was CVE-2025-63829 published?

CVE-2025-63829 was published on 2025-11-18 and last updated on 2026-06-17.

CVE-2025-63829

CVE-2025-63829 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% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198035
Weakness: CWE-190
Affected product: Eprosima Fast Dds
Published: 2025-11-18
Last modified: 2026-06-17

Description

eProsima Fast-DDS v3.3 and before has an infinite loop vulnerability caused by integer overflow in the Time_t:: fraction() function.

Frequently asked questions

What is CVE-2025-63829?: eProsima Fast-DDS v3.3 and before has an infinite loop vulnerability caused by integer overflow in the Time_t:: fraction() function.
How severe is CVE-2025-63829?: CVE-2025-63829 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-2025-63829 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-63829?: CVE-2025-63829 affects Eprosima Fast Dds. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-63829?: 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-2025-63829 have an EU (EUVD) identifier?: Yes. CVE-2025-63829 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198035.
When was CVE-2025-63829 published?: CVE-2025-63829 was published on 2025-11-18 and last updated on 2026-06-17.

References

Affected products (1)

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

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