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Vulnerability · Published Feb 3, 2026 · Assigned by GitHub_M

CVE-2025-62799FastDDS's heap buffer overflow in RTPS DATA_FRAG enables unauthenticated DoS (potential RCE)

High 7.2

In plain English

A high-severity heap buffer overflow in Fast-DDS from eProsima. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS 4.0)7.2High
Exploit odds (30 days)0.5%top 54.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12fastddsno fix listedDEBIAN-CVE-2025-62799
Debian:13fastddsno fix listedDEBIAN-CVE-2025-62799
Ubuntu:24.04:LTSfastddsno fix listedUBUNTU-CVE-2025-62799
Ubuntu:25.10fastddsno fix listedUBUNTU-CVE-2025-62799
Ubuntu:26.04:LTSfastddsno fix listedUBUNTU-CVE-2025-62799
Ubuntu:26.10fastddsno fix listedUBUNTU-CVE-2025-62799

Affected products (as reported)

VendorProductVersions
eProsima Fast-DDS 3.4.0 – before 3.4.13.0.0 – before 3.3.10 – before 2.6.11

Weakness: CWE-122 · 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/E:U

References