CVE-2026-101283

Summary

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

Affected Software

Weaknesses

• CWE-122: CWE-122 Heap-based buffer overflow

References

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

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