CVE-2026-102253

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Source

https://cve.org/CVERecord?id=CVE-2026-102253

Import Source

https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-102253.json

JSON Data

https://api.test.osv.dev/v1/vulns/CVE-2026-102253

Downstream

Published

2026-09-29T20:11:47Z

Modified

2026-10-02T11:45:48Z

Severity

8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

iperf3 < 3.22 UDP Receive Worker Infinite Loop DoS

Details

iperf3 versions prior to 3.22 contains a denial of service vulnerability that allows unauthenticated remote attackers to crash-loop the server's UDP receive worker into an unrecoverable infinite loop by sending a single crafted control-channel parameter message followed by one 16-byte UDP datagram. Attackers can permanently pin the affected per-stream receive thread at approximately 100% CPU usage, rendering the server unusable until forcibly killed with SIGKILL, as the process does not respond to normal control-channel closure.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-835"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102253.json"
}

References

Affected packages

Git / github.com/esnet/iperf

Affected ranges

Type

GIT

Repo

https://github.com/esnet/iperf

Events

Introduced

a0be85934144bc04712a6695b14ea6e45c379e1d

Fixed

926bd905501b792bd082d2200d1d1a84aa543e3a

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "3.14"
        },
        {
            "fixed": "3.22"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

3.*

3.14

3.15

3.16

3.16-beta1

3.17.1

3.18

3.19

3.20

3.21

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-102253.json"