Out-of-bounds Read Affecting fastdds package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-FASTDDS-19698145
- published12 Sept 2026
- disclosed9 Sept 2026
Introduced: 9 Sep 2026
CVE-2026-22590 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest fastdds.
NVD Description
Note: Versions mentioned in the description apply only to the upstream fastdds package and not the fastdds package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
eprosima Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). Versions prior to 2.6.12, 2.14.6, 3.2.4, 3.3.1, and 3.4.2 have a remotely triggerable Out-of-Bounds Read while processing RTPS DATA_FRAG submessages. An attacker can craft a DATA_FRAG with a large sampleSize but a small actual payload, and set fragmentsInSubmessage such that the receiver treats the packet as the LAST fragment**. In this LAST-fragment path, Fast-DDS computes incoming_length based on sampleSize and calls memcpy() without validating incoming_data.length >= incoming_length. As a result, CacheChange_t::add_fragments() reads past the received UDP datagram buffer and into adjacent heap memory, copying those bytes into the reassembly buffer. In a Discovery Server deployment, the resulting CacheChange_t can be relayed to other participants, meaning that a newly joining participant may receive leaked heap memory (e.g., pointer values that could aid ASLR bypass). Versions 2.6.12, 2.14.6, 3.2.4, 3.3.1, and 3.4.2 fix the issue.