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CVE-2026-101283.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSCRITICAL / 9.2CVSS 4.0 · 98a01053-8a31-4f6d-9aa9-252be161adc6
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSAwaiting AnalysisModified Oct 01, 2026

Disclosure 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

Source-reported weakness categories

CWE-122

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

NIST National Vulnerability Database · NVD-CVE-2026-101283

Open original source · Updated Oct 01, 2026

Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.

Original records & references

PUBLISHED 2026-09-30T18:16:33-04:00
MODIFIED 2026-10-01T12:17:32-04:00
INGESTED 2026-10-06T11:45:14-04:00