High severity · published Nov 18, 2025
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
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
eProsima Fast-DDS v3.3 and before has an infinite loop vulnerability caused by integer overflow in the Time_t:: fraction() function.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FD
Fast Dds · Eprosima
through 3.3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-63829
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-63829
Exploit
https://gist.github.com/lkloliver/b00377bec754d4aa1dc731be210d5889
Product
https://github.com/eProsima/Fast-DDS/blob/master/src/cpp/fastdds/core/Time_t.cpp#L67
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