How severe is CVE-2021-38425?

CVE-2021-38425 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-38425 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38425?

CVE-2021-38425 affects Eprosima Fast Dds. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38425?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-38425 published?

CVE-2021-38425 was published on 2022-05-05 and last updated on 2026-06-17.

CVE-2021-38425

CVE-2021-38425 is a high-severity vulnerability in Eprosima Fast Dds with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-406.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 6.4
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-406
Affected product: Eprosima Fast Dds
Published: 2022-05-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-38425?: 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.
How severe is CVE-2021-38425?: CVE-2021-38425 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-38425 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38425?: CVE-2021-38425 affects Eprosima Fast Dds. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38425?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-38425 published?: CVE-2021-38425 was published on 2022-05-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:eprosima:fast_dds:*:*:*:*:*:*:*:*

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