Cloudanix VulnDB

CVE-2026-71218

Medium · 5.3

CVSS

5.3

EPSS

0.4%

Published

Aug 11, 2026

CISA due date

—

The record

A flaw was found in iperf3. A remote unauthenticated attacker can exploit a vulnerability in the `JSON_read()` function, which accepts a peer-controlled message length and allocates memory without an upper bound. This allows the attacker to trigger excessive memory consumption, leading to a Denial of Service (DoS) through memory exhaustion, severe slowdown, or termination of the iperf3 service.

Affected packages

Ecosystem Package Introduced Fixed

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