VDB

CVE-2026-71217

CVE-2026-71217 PUBLISHED CVSS 7.5 HIGH

Reported by redhat · Published August 11, 2026

A flaw was found in iperf3. A remote attacker can exploit this vulnerability by sending crafted control-channel JSON with oversized numeric parameters, such as `parallel` and `len`, which are not properly validated by the server. This improper input validation can lead to excessive stream and thread creation, as well as large buffer allocations, causing resource exhaustion. Consequently, this can result in a Denial of Service (DoS) on the affected iperf3 server.

Risk Scores

CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Red HatRed Hat Enterprise Linux 100:3.17.1-6.el10_2.1
Red HatRed Hat Enterprise Linux 80:3.5-12.el8_10.1
Red HatRed Hat Enterprise Linux 90:3.9-17.el9_8.1
Red HatRed Hat Enterprise Linux 7
Red HatRed Hat Enterprise Linux 90:3.9-17.el9_8.1
Red HatRed Hat Enterprise Linux 80:3.5-12.el8_10.1
Red HatRed Hat Enterprise Linux 100:3.17.1-6.el10_2.1
Red HatRed Hat Enterprise Linux 7

Timeline

  • Aug 11, 2026 EPSS Score
  • Aug 11, 2026 Coalition ESS Score
  • Aug 11, 2026 CVE Published
  • Aug 16, 2026 Security Advisory
  • Aug 24, 2026 EPSS Score
  • Aug 26, 2026 EPSS Score
  • Aug 30, 2026 EPSS Score
  • Aug 31, 2026 EPSS Score
  • Sep 1, 2026 EPSS Score
  • Sep 1, 2026 Distribution Patch
  • Sep 1, 2026 Distribution Patch
  • Sep 1, 2026 Distribution Patch

References

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