CVE-2025-62799 — Heap-based Buffer Overflow in Fast-dds

CWE-122 — Heap-based Buffer OverflowCWE-787 — Out-of-bounds Write5 documents5 sources
Severity
7.2HIGHNVD
EPSS
0.0%
top 93.79%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Eprosima Fast-ddsEprosima Fast DDSDebian Linux
Timeline
PublishedFeb 3

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…

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected Packages2 packages

▶CVEListV5eprosima/fast-dds3.4.0 — 3.4.1+2
▶NVDeprosima/fast_dds3.0.0 — 3.3.1+2

Also affects: Debian Linux 11.0, 12.0, 13.0

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
CVEList
FastDDS's heap buffer overflow in RTPS DATA_FRAG enables unauthenticated DoS (potential RCE)↗2026-02-03
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OSV
CVE-2025-62799: Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group )↗2026-02-03
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📋Vendor Advisories

1
Debian
CVE-2025-62799: fastdds - Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard...↗2025
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🕵️Threat Intelligence

1
Wiz
CVE-2025-62799 Impact, Exploitability, and Mitigation Steps | Wiz↗
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