iperf3: iperf3 3.20–3.21 (esnet/iperf) has a pre-auth heap buffer overflow in decrypt_rsa_message(): a 256-byte RSA buffer is...
CVE-2026-101283 is fixed in 5 products on 1 platform, first by DEBIAN-CVE-2026-101283, released October 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.
iperf3 3.20–3.21 (esnet/iperf) has a pre-auth heap buffer overflow in decrypt_rsa_message(): a 256-byte RSA buffer is BIO_read with the attacker-controlled ciphertext length (guard warns only), so an unauthenticated client overflows the heap via an oversized authtoken; fixed in 3.22
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| iperf · opensuse-leap 16.0 | 3.21-160000.1.1 | OPENSUSE-SU-2026:22090-1 | Nov 7, 2026 |
| iperf · sles 15.7 | 3.22-150000.3.18.1 | SUSE-SU-2026:4678-1 | Nov 7, 2026 |
| iperf · sles 16.0 | 3.21-160000.1.1 | SUSE-SU-2026:24234-1 | Nov 7, 2026 |
| iperf3 · Debian 14 | 3.22-0.1 | DEBIAN-CVE-2026-101283 | Oct 5, 2026 |
| iperf3 · amzn 2023 | 3.22-1.amzn2023.0.1 | ALAS2023-2026-3299 | Nov 7, 2026 |
| iperf3-debuginfo · amzn 2023 | 3.22-1.amzn2023.0.1 | ALAS2023-2026-3299 | Nov 7, 2026 |
| iperf3-debugsource · amzn 2023 | 3.22-1.amzn2023.0.1 | ALAS2023-2026-3299 | Nov 7, 2026 |
| iperf3-devel · amzn 2023 | 3.22-1.amzn2023.0.1 | ALAS2023-2026-3299 | Nov 7, 2026 |
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