CVE-2026-102253

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Source
https://cve.org/CVERecord?id=CVE-2026-102253
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102253.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-102253
Downstream
Published
2026-09-29T20:11:47Z
Modified
2026-10-02T03:47:17Z
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",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "3.14"
                },
                {
                    "fixed":  "3.22"
                }
            ],
            "source":  "AFFECTED_FIELD"
        },
        {
            "extracted_events":  [
                {
                    "introduced":  "3.14"
                },
                {
                    "fixed":  "3.22"
                }
            ],
            "source":  "CPE_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/esnet/iperf

Affected ranges

Type
GIT
Repo
https://github.com/esnet/iperf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
926bd905501b792bd082d2200d1d1a84aa543e3a
Database specific
Show details 
{
    "source":  "REFERENCES"
}

Affected versions

2.*
2.0-RELEASE
2.0.1-RELEASE
2.0.2-RELEASE
2.0.3-RELEASE
2.0.4-RELEASE
3.*
3.0-ALPHA1
3.0-BETA1
3.0-BETA2
3.0-BETA3
3.0-BETA4
3.0-BETA5
3.0.1
3.0.4
3.1
3.10
3.10.1
3.11
3.12
3.13
3.14
3.15
3.16
3.16-beta1
3.17.1
3.18
3.19
3.1b1
3.1b2
3.1b3
3.2
3.20
3.21
3.2rc1
3.3
3.4
3.5
3.6
3.7
3.8
3.8.1
3.9
iperf-3.*
iperf-3.0a1
Other
iperf3
trunk

Database specific

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