How severe is CVE-2025-54351?

CVE-2025-54351 has a CVSS 3.x base score of 8.9, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2025-54351 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-54351?

CVE-2025-54351 affects Es Iperf3. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-54351?

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.

Does CVE-2025-54351 have an EU (EUVD) identifier?

Yes. CVE-2025-54351 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23458.

When was CVE-2025-54351 published?

CVE-2025-54351 was published on 2025-08-03 and last updated on 2026-06-17.

CVE-2025-54351

CVE-2025-54351 is a high-severity vulnerability in Es Iperf3 with a CVSS 3.x base score of 8.9. 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-420.

Key facts

Severity: High (CVSS 3.x base score 8.9)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-23458
Weakness: CWE-420
Affected product: Es Iperf3
Published: 2025-08-03
Last modified: 2026-06-17

Description

In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).

Frequently asked questions

What is CVE-2025-54351?: In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv).
How severe is CVE-2025-54351?: CVE-2025-54351 has a CVSS 3.x base score of 8.9, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2025-54351 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-54351?: CVE-2025-54351 affects Es Iperf3. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-54351?: 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.
Does CVE-2025-54351 have an EU (EUVD) identifier?: Yes. CVE-2025-54351 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23458.
When was CVE-2025-54351 published?: CVE-2025-54351 was published on 2025-08-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:es:iperf3:3.19:*:*:*:*:*:*:*

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