In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow.
CVE-2025-54349 is fixed in 6 products on 1 platform, first by iperf3 3.7-3ubuntu0.1~esm2, released August 2, 2025. It is not reported as exploited. Patch Radar priority: High.
Iperf is a tool which can measure maximum TCP bandwidth and tune various parameters and UDP characteristics. Iperf reports bandwidth, delay jitter, and data-gram loss. Security Fix(es): * iperf3: iperf Heap Buffer Overflow (CVE-2025-54349) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| iperf · opensuse-leap 15.6 | 3.19.1-150000.3.15.1 | SUSE-SU-2025:02749-1 | Aug 11, 2025 |
| iperf · sles 15.6 | 3.19.1-150000.3.15.1 | SUSE-SU-2025:02749-1 | Aug 11, 2025 |
| iperf · sles 15.7 | 3.19.1-150000.3.15.1 | SUSE-SU-2025:02749-1 | Aug 11, 2025 |
| iperf3 · Debian 11.6 (bullseye) | 3.9-1+deb11u3 | DLA-4281-1 | Aug 24, 2025 |
| iperf3 · Debian 12.15 (bookworm) | 3.12-1+deb12u2 | DEBIAN-CVE-2025-54349 | Aug 3, 2025 |
| iperf3 · Debian 13.5 (trixie) | 3.18-2+deb13u1 | DEBIAN-CVE-2025-54349 | Aug 3, 2025 |
| iperf3 · Debian 14 | 3.19.1-1 | DEBIAN-CVE-2025-54349 | Aug 3, 2025 |
| iperf3 · RHEL 10 | 3.17.1-4.el10_0.1 | RHSA-2026:1967 | Aug 3, 2025 |
| iperf3 · RHEL 8 | 0:3.5-12.el8_10 | RHSA-2026:1592 | Jan 29, 2026 |
| iperf3 · RHEL 9 | 0:3.9-14.el9_7.1 | RHSA-2026:1595 | Jan 29, 2026 |
| iperf3 · Ubuntu 20.04 LTS (focal) | 3.7-3ubuntu0.1~esm2 | iperf3 3.7-3ubuntu0.1~esm2 | Aug 2, 2025 |
| iperf3 · Ubuntu 22.04.1 LTS (jammy) | 3.9-1+deb11u1ubuntu0.1 | iperf3 3.9-1+deb11u1ubuntu0.1 | Aug 2, 2025 |
| iperf3 · Ubuntu 24.04.5 LTS (noble) | 3.16-1ubuntu0.1~esm1 | iperf3 3.16-1ubuntu0.1~esm1 | Aug 2, 2025 |
| iperf3 · Ubuntu 25.10 (questing) | 3.18-2ubuntu0.1 | iperf3 3.18-2ubuntu0.1 | Aug 2, 2025 |
| iperf3 · almalinux 10 | 3.17.1-5.el10_1 | ALSA-2026:1597 | Jan 29, 2026 |
| iperf3 · almalinux 8 | 3.5-12.el8_10 | ALSA-2026:1592 | Jan 29, 2026 |
| iperf3 · almalinux 9 | 3.9-14.el9_7.1 | ALSA-2026:1595 | Jan 29, 2026 |
| iperf3 · amzn 2023 | 3.19.1-1.amzn2023 | ALAS2023-2025-1197 | Sep 17, 2025 |
| iperf3 · ol 10 | 0:3.17.1-5.el10_1 | ELSA-2026-1597 | Jan 29, 2026 |
| iperf3 · ol 8 | 0:3.5-12.el8_10 | ELSA-2026-1592 | Jan 29, 2026 |
| iperf3 · ol 9 | 0:3.9-14.el9_7.1 | ELSA-2026-1595 | Jan 29, 2026 |
| iperf3 · rocky 10 | 0:3.17.1-5.el10_1 | RLSA-2026:1597 | Feb 3, 2026 |
| iperf3 · rocky 8 | 0:3.5-12.el8_10 | RLSA-2026:1592 | Feb 3, 2026 |
| iperf3 · rocky 9 | 0:3.9-14.el9_7.1 | RLSA-2026:1595 | Feb 5, 2026 |
| iperf3-debuginfo · amzn 2023 | 3.19.1-1.amzn2023 | ALAS2023-2025-1197 | Sep 17, 2025 |
| iperf3-debugsource · amzn 2023 | 3.19.1-1.amzn2023 | ALAS2023-2025-1197 | Sep 17, 2025 |
| iperf3-devel · amzn 2023 | 3.19.1-1.amzn2023 | ALAS2023-2025-1197 | Sep 17, 2025 |
| libiperf0 · Ubuntu 20.04 LTS (focal) | 3.7-3ubuntu0.1~esm2 | libiperf0 3.7-3ubuntu0.1~esm2 | Aug 2, 2025 |
| libiperf0 · Ubuntu 22.04.1 LTS (jammy) | 3.9-1+deb11u1ubuntu0.1 | libiperf0 3.9-1+deb11u1ubuntu0.1 | Aug 2, 2025 |
| libiperf0 · Ubuntu 24.04.5 LTS (noble) | 3.16-1ubuntu0.1~esm1 | libiperf0 3.16-1ubuntu0.1~esm1 | Aug 2, 2025 |
| libiperf0 · Ubuntu 25.10 (questing) | 3.18-2ubuntu0.1 | libiperf0 3.18-2ubuntu0.1 | Aug 2, 2025 |
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