#VU125727 Allocation of Resources Without Limits or Throttling in Fast DDS - CVE-2025-64438
Published: April 9, 2026
Vulnerability identifier: #VU125727
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-64438
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Fast DDS
Fast DDS
Software vendor:
eProsima
eProsima
Description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in StatefulReader::processGapMsg() when processing RTPS GAP submessages under RELIABLE QoS. A remote attacker can send a specially crafted GAP packet with a huge gap range to cause a denial of service.
A single small GAP message can trigger multi-GB heap growth and process termination.
Remediation
Install security update from vendor's website.