Topic

Pre-Authentication RCE

News, analysis and practical guidance on Pre-Authentication RCE.

1 articleUpdated 1 Oct 2026

ThreatsCloud & SaaSBreaking
ESnet iperf3 RSA Authtoken Pre-Authentication Heap Buffer Overflow Flaw Uncovered (CVE-2026-101283)
A pre-authentication heap buffer overflow in ESnet iperf3 v3.20–3.21 allows unauthenticated remote attackers to corrupt heap memory via oversized RSA tokens.
CST Newsroom1 Oct 202611 min read