VulnerabilityAnalyzed

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).

CRITICAL 10.0EPSS 0.41%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.41%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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

CVSS 3.1: 10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.41% probability · 35th percentile
CISA KEV: Not listed
Weakness: CWE-420
Affected: es/iperf3
Source: cve@mitre.org

References

https://github.com/esnet/iperf/commit/969b7f70c447513e92c9798f22e82b40ebc53bf0Patch
https://github.com/esnet/iperf/releases/tag/3.19.1Release Notes

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.