EUVD-2026-90389

iperf3 3.20–3.21 esnet/iperf has a pre-auth heap buffer overflow in decryptrsamessage: a 256-byte RSA buffer is BIOread with the attacker-controlled ciphertext length guard warns only, so an unauthenticated client overflows the heap via an oversized authtoken; fixed in 3.22...

CVE-2026-101283

iperf3 3.20–3.21 esnet/iperf has a pre-auth heap buffer overflow in decryptrsamessage: a 256-byte RSA buffer is BIOread with the attacker-controlled ciphertext length guard warns only, so an unauthenticated client overflows the heap via an oversized authtoken; fixed in 3.22...

CVE-2026-101283

The iperf3 network testing tool (versions 3.20–3.21 by esnet/iperf) is vulnerable to a pre-auth heap buffer overflow within the decrypt_rsa_message() function. The root cause is that a 256-byte RSA buffer is populated using BIO_read with an attacker-controlled ciphertext length; while a guard pro...