What’s Vulnerable › Vulnerabilities
CVE-2026-101283
- Severity: critical (CVSS 9.2 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-30 · updated 2026-10-01
- Weakness: CWE-122
Description
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 products
- esnet iperf3: 3.20, 3.21
References
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