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Fencer Vulns
high 8.9

CVE-2025-54351 json

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

published 2025-08-03 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-23458

cvss
8.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

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

Patch / fix

  • ES iperf3 3.19.1
  • iperf SLE Module for Package Hub 15 SP7, SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 +1 more 3.19.1-150000.3.15.1

suse advisories SUSE-SU-2025:02749-1

  • iperf openSUSE Tumbleweed 3.19.1-1.1

opensuse advisories openSUSE-SU-2025:15414-1

  • iperf3 Alpine 3.24, Alpine 3.23, Alpine 3.22 3.19.1-r0

alpine advisories ALPINE-CVE-2025-54351

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-54351 updated cvss 8.9

iperf3: iperf Buffer Overflow

  • Red Hat Enterprise Linux 7 iperf3
    not affected: vulnerable code not present
  • Red Hat Enterprise Linux 8 iperf3 Red Hat Enterprise Linux 9 iperf3
    not affected: component not present
  • Red Hat Enterprise Linux 10 iperf3
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
15 mo ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L
NVD 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

  • ES iperf3

Classification

Weakness
  • CWE-420 Unprotected Alternate Channel

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.