What is CVE-2026-71218?

CVE-2026-71218 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. Iperf3: unbounded peer-controlled allocation in iperf3 json_read() allows unauthenticated remote memory exhaustion

Which CVE IDs does CVE-2026-71218 cover?

CVE-2026-71218 covers the following CVE IDs: CVE-2026-71218. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-71218?

CVE-2026-71218 has a CVSS v3 base score of 5.3, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-71218?

CVE-2026-71218 affects 1 product, including: azl3 iperf3 3.17.1-4 on Azure Linux 3.0.

CVE-2026-71218MediumCVSS 5.3

Iperf3: unbounded peer-controlled allocation in iperf3 json_read() allows unauthenticated remote memory exhaustion

Vendor

Microsoft Security Response Center (MSRC)

Published

August 14, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-71218 →

🎯 Affected products1

azl3 iperf3 3.17.1-4 on Azure Linux 3.0

✅ Remediation

KBCBL-Mariner Releases (Security Update) — fixed build 3.17.1-5

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71218
referencehttps://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade