CVE-2025-63829

HIGH

Published Nov 18, 2025 Modified Dec 31, 2025 CWE-190 CWE-835

Description

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

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-190 Integer Overflow

CWE-835 CWE-835

Affected Products

Vendor	Product	Versions
eprosima	fast_dds	< 3.3.0

References

Exploits

https://gist.github.com/lkloliver/b00377bec754d4aa1dc731be210d5889

Other References

https://github.com/eProsima/Fast-DDS/blob/master/src/cpp/fastdds/core/Time_t.cpp#L67

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-63829? +

CVE-2025-63829 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-63829? +

CVE-2025-63829 affects products from eprosima, specifically: fast_dds. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-63829? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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