CVE-2006-4339

CriticalCVSS 9.1/10Last modified Nov 4, 2026

Description

A flaw was found in OpenSSL. When configured to use an RSA key with exponent 3, OpenSSL improperly removes PKCS-1 padding before generating a hash. This allows remote attackers to forge PKCS #1 v1.5 signatures. Consequently, OpenSSL may incorrectly verify X.509 and other certificates, leading to a bypass of trust and authentication mechanisms.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-347 CWE-310

Affected software

No affected versions have been published.

Timeline

Published: Sep 5, 2006
Last modified: Nov 4, 2026
NVD status: Modified

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