RHSA-2026:61389HighCVSS 7.5

Red Hat Security Advisory: iperf3 security update

Published
August 31, 2026
Last Modified
November 5, 2026

🔗 CVE IDs covered (1)

CVE-2026-71217 →

📋 Description

CVE-2026-71217 — iperf3: iperf3 server accepts unbounded peer-controlled JSON parameters enabling remote denial of service via resource exhaustion

🎯 Affected products17

  • Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-0:3.9-17.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-0:3.9-17.el9_8.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-0:3.9-17.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-0:3.9-17.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-0:3.9-17.el9_8.1.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-0:3.9-17.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debuginfo-0:3.9-17.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debuginfo-0:3.9-17.el9_8.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debuginfo-0:3.9-17.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debuginfo-0:3.9-17.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debuginfo-0:3.9-17.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debugsource-0:3.9-17.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debugsource-0:3.9-17.el9_8.1.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debugsource-0:3.9-17.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debugsource-0:3.9-17.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • iperf3-debugsource-0:3.9-17.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: To mitigate this issue, restrict network access to the `iperf3` server to trusted clients or networks using firewall rules. If the `iperf3` server functionality is not required, disable the `iperf3` service.

🔗 References (4)