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No exploitation reportedFix available

CVE-2025-54349

No exploitation reported by the sources we read.

  • Published2025-08-03
  • Fixed in3.19.1
  • WeaknessCWE-193

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.

Timeline

dates in UTC
  1. 2025-08-0302:15CVE publishedNVD

Versions per branch

NVD
Es iperf3
BranchAffectedFixed in
3.x≥ 3.2, < 3.19.13.19.1

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As mitre, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • ES iperf3other versions: not affected
    Affected
    • < 3.19.1fixed in 3.19.1custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2025-08-03

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • iperfSUSE:Linux Enterprise Module for Package Hub 15 SP7all versions · fixed in 3.19.1-150000.3.15.1
  • iperfSUSE:Linux Enterprise Module for Package Hub 15 SP6all versions · fixed in 3.19.1-150000.3.15.1
  • iperfSUSE:Enterprise Storage 7.1all versions · fixed in 3.19.1-150000.3.15.1
  • iperfopenSUSE:Tumbleweedall versions · fixed in 3.19.1-1.1
  • iperfopenSUSE:Leap 15.6all versions · fixed in 3.19.1-150000.3.15.1
  • iperfMageia:9all versions · fixed in 3.18-1.1.mga9
  • iperf3Ubuntu:Pro:24.04:LTSall versions · fixed in 3.16-1ubuntu0.1~esm1
  • iperf3Ubuntu:Pro:20.04:LTSall versions · fixed in 3.7-3ubuntu0.1~esm2

44 more package ranges on OSV.dev

Vendor advisories

  • RHSA-2026:2449 Red Hat Product Security30 products fixed

    Red Hat Security Advisory: iperf3 security update

  • RHSA-2026:2448 Red Hat Product Security14 products fixed

    Red Hat Security Advisory: iperf3 security update

  • RHSA-2026:2328 Red Hat Product Security17 products fixed

    Red Hat Security Advisory: iperf3 security update

  • RHSA-2026:2329 Red Hat Product Security7 products fixed

    Red Hat Security Advisory: iperf3 security update

  • RHSA-2026:1967 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: iperf3 security update

  • RHSA-2026:1882 Red Hat Product Security16 products fixed

    Red Hat Security Advisory: iperf3 security update

6 more advisories

Full record on NVD

Fix

  1. Update Es iperf3 to 3.19.1
  2. Vendor fix Red Hat Product Security RHSA-2026:2449 · 30 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  3. Workaround from the vendor Red Hat Product Security RHSA-2026:2449 · 30 productsMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
2025-08-03
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-8xx8-qrh3-q8mq

Frequently asked questions

What is CVE-2025-54349?

In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.

Is CVE-2025-54349 actively exploited?

Active exploitation of CVE-2025-54349 has not been confirmed. Its EPSS score was 0.5% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-54349?

CVE-2025-54349 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

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Sources for this record