# 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.

Source: https://junglewise.ai/threats/cve-2025-63829-eprosima-fast-dds-v3-3-and-before-has-an-infinite-loop  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-11-18  
License: CC BY 4.0 with a link back

CVE-2025-63829 · Severity: high · CVSS 7.5 · Published 2025-11-18

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

Technologies: [Eprosima Fast Dds](https://junglewise.ai/threats/technologies/fast-dds). Vendors: [Eprosima](https://junglewise.ai/threats/vendors/eprosima).

## Quick answers

**Is CVE-2025-63829 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-63829 being exploited in the wild.

**How severe is CVE-2025-63829?** High severity, with a CVSS score of 7.5, published 18 November 2025.

**Which products and versions are affected?** Eprosima Fast Dds. The advisory does not name versions.

**Is there a fix for CVE-2025-63829?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-63829?** Check whether you run Eprosima Fast Dds. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Eprosima Fast Dds

## Related threats

- [eProsima Fast DDS stack exhaustion in DDSSQLFilter parser](https://junglewise.ai/threats/cve-2026-22591-eprosima-fast-dds-stack-exhaustion-in-ddssqlfilter-parser)
- [eprosima Fast DDS out-of-bounds read in DATA_FRAG processing](https://junglewise.ai/threats/cve-2026-22590-eprosima-fast-dds-out-of-bounds-read-in-data-frag-processing)
- [eProsima Fast-DDS improper certificate revocation validation](https://junglewise.ai/threats/cve-2025-67108-eprosima-fast-dds-improper-certificate-revocation-validation)
- [eProsima Fast-DDS integer overflow in DataFrag sub-message processing](https://junglewise.ai/threats/cve-2025-65865-eprosima-fast-dds-integer-overflow-in-datafrag-sub-message)