HIGH 7.5 NVD
CVE-2026-71217
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
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.
References
- https://access.redhat.com/security/cve/CVE-2026-71217
- https://bugzilla.redhat.com/show_bug.cgi?id=2460984
- https://github.com/esnet/iperf/commit/494dd377eca4689672becdf06a85158557db1586
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-08-11 via NVD.
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