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.
| Reporter | Title | Published | Views | Family All 27 |
|---|---|---|---|---|
 | CVE-2026-101276 | 30 Sep 202621:11 | – | alpinelinux |
 | CVE-2026-101276 | 30 Sep 202622:08 | – | circl |
 | CVE-2026-101276 | 30 Sep 202621:11 | – | cve |
 | CVE-2026-101276 | 30 Sep 202621:11 | – | cvelist |
 | CVE-2026-101276 | 30 Sep 202621:11 | – | debiancve |
 | EUVD-2026-90387 | 30 Sep 202621:11 | – | euvd |
 | CVE-2026-101276 | 30 Sep 202621:11 | – | mend |
 | CVE-2026-101276 | 30 Sep 202621:16 | – | nvd |
 | iperf-3.22-1.1 on GA media (moderate) | 18 Oct 202600:00 | – | opensuse |
| Security update for iperf (important) | 18 Oct 202600:00 | – | opensuse |
10
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16 Oct 2026 08:49Current
5.8Medium risk
Vulners AI Score5.8
CVSS 49.2
EPSS0.00395
SSVC