High severity7.5NVD Advisory· Published May 5, 2022· Updated Jun 17, 2026

CVE-2021-38425

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Eprosima/FastDDScpe-rescue3 versions
unspecified+ 2 more
- (no CPE)range: unspecified
- (no CPE)range: <2.4.0
- cpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*range: <2.4.0

Patches

Vulnerability mechanics

References

www.cisa.gov/uscert/ics/advisories/icsa-21-315-02nvdThird Party AdvisoryUS Government Resource

News mentions

No linked articles in our index yet.

Severity

HighCVSS v3.1

7.5/ 10

Attack vector: Network
Complexity: Low
Privileges: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected

Source repo: github.com/eProsima/Fast-DDS

EPSS

Probability of exploitation in the next 30 days.

5.16%

VYPR risk score

Composite of severity, exploitation, and reach.

0.49medium

cvss	0.488
epss	0.004
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000

Weaknesses

CWE-406
Insufficient Control of Network Message Volume (Network Amplification)

CVE ID

CVE-2021-38425

Credits

FM
Federico Maggi (Trend Micro Research), Ta-Lun Yen, and Chizuru Toyama (TXOne Networks, Trend Micro) reported these vulnerabilities to CISA. In addition, Patrick Kuo, Mars Cheng (TXOne Networks, Trend Micro), Víctor Mayoral-Vilches (Alias Robotics), and Erik Boasson (ADLINK Technology) also contributed to this research.
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