CVE-2025-62799
CWE-122Published: February 3, 2026· Updated: Jun 17, 2026
Official Description
Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group
). Prior to versions 3.4.1, 3.3.1, and 2.6.11, a heap buffer overflow exists in the Fast-DDS DATA_FRAG receive path. An un
authenticated sender can transmit a single malformed RTPS DATA_FRAG packet where `fragmentSize` and `sampleSize` are craft
ed to violate internal assumptions. Due to a 4-byte alignment step during fragment metadata initialization, the code write
s past the end of the allocated payload buffer, causing immediate crash (DoS) and potentially enabling memory corruption (
RCE risk). Versions 3.4.1, 3.3.1, and 2.6.11 patch the issue.
Risk Analysis
A heap buffer overflow in the Fast-DDS DATA_FRAG receive path allows an unauthenticated attacker to trigger a crash or potentially achieve remote code execution. The vulnerability is highly critical due to its 9.8 CVSS score and the ability for remote, low-complexity exploitation.
There is no public exploit known for this vulnerability, and it is not currently listed in the CISA KEV catalog.
Upgrade to Fast DDS versions 3.4.1, 3.3.1, or 2.6.11 to resolve the buffer overflow issue.
Technical Analysis
CVE-2025-62799 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-122)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-62799 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts