CVE-2026-101276

iperf3 3.21 (esnet/iperf) contains a remote, unauthenticated heap use- ...

Published 30 Sep 2026Modified 1 Oct 2026CWE 416

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

No source gives a CVSS score.

Trivy's own label is CRITICAL. Rated critical by Photon OS.

Description

iperf3 3.21 (esnet/iperf) contains a remote, unauthenticated heap use-after-free: the server's per-test watchdog server_timer_proc() frees streams without cancelling/joining their worker threads, so a blocked worker dereferences a freed iperf_stream; fixed in 3.22.

Affected packages and fixed versions

Source	Package	Fixed in
Photon OS 4.0	iperf, iperf-doc	3.19.1-2.ph4
Photon OS 5.0	iperf, iperf-doc	3.22-1.ph5
alpine edge	iperf3	3.22-r0
debian 11	iperf3	no fix listed
debian 13	iperf3	no fix listed
debian 14	iperf3	3.22-0.1
rapidfort debian 12	iperf3	0:3.22-0.1
rapidfort debian 13	iperf3	0:3.22-0.1

Show all 10 entries from 8 sources

Source	Package	Fixed in
Photon OS 4.0	iperf	3.19.1-2.ph4
Photon OS 4.0	iperf-doc	3.19.1-2.ph4
Photon OS 5.0	iperf	3.22-1.ph5
Photon OS 5.0	iperf-doc	3.22-1.ph5
alpine edge	iperf3	3.22-r0
debian 11	iperf3	no fix listed
debian 13	iperf3	no fix listed
debian 14	iperf3	3.22-0.1
rapidfort debian 12	iperf3	0:3.22-0.1
rapidfort debian 13	iperf3	0:3.22-0.1

References

https://newreleases.io/project/github/esnet/iperf/release/3.22

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RecordsEach decision is recorded with the policy that ran and its hash, then sealed under a signed checkpoint.

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Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.