# CVE-2021-38425

## Summary

- **CVE ID:** CVE-2021-38425
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-406
- **Published:** May 5, 2022
- **Last Modified:** Mar 13, 2026

## Description

eProsima Fast DDS versions prior to 2.4.0 (#2269) are susceptible to exploitation when an attacker sends a specially crafted packet to flood a target device with unwanted traffic, which may result in a denial-of-service condition and information exposure.

## Affected Products

- eProsima — Fast DDS (unspecified)

## References

- [CNA](https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02)
- [CNA](https://github.com/eProsima/Fast-DDS)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.09%
- **EPSS Percentile:** 25.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._