CVE record · CVE-2006-4339

Openssl: openssl: signature forgery via improper pkcs-1 padding removal leading to certificate validation bypass

CVSS 9.1 CriticalCriticalEPSS 0.039 · 90th percentile

Critical, because:

CVSS score 9.1: 9.0 or more.

Published by the CVE Program (CNA: redhat) at 5 Sept 2006, 17:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	Red Hat Enterprise Linux 3 Package name: openssl https://access.redhat.com/downloads/content/package-browser/	unaffected 0:0.9.7a-33.18 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 3 Package name: openssl096b https://access.redhat.com/downloads/content/package-browser/	unaffected 0:0.9.6b-16.43 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 4 Package name: openssl https://access.redhat.com/downloads/content/package-browser/	unaffected 0:0.9.7a-43.11 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 4 Package name: openssl096b https://access.redhat.com/downloads/content/package-browser/	unaffected 0:0.9.6b-22.43 to before * rpm Other versions: affected
Red Hat	Red Hat Network Satellite Server v 4.2 Package name: rhn-solaris-bootstrap https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.0.2-3 to before * rpm Other versions: affected
Red Hat	Red Hat Network Satellite Server v 4.2 Package name: rhn_solaris_bootstrap_5_0_2_3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1-0 to before * rpm Other versions: affected
Red Hat	Red Hat Network Satellite Server v 4.2 (RHEL3) Package name: rhn-solaris-bootstrap https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.0.2-3 to before * rpm Other versions: affected
Red Hat	Red Hat Network Satellite Server v 4.2 (RHEL3) Package name: rhn_solaris_bootstrap_5_0_2_3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1-0 to before * rpm Other versions: affected
Red Hat	Red Hat Network Satellite Server v 5.0 Package name: rhn-solaris-bootstrap https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.0.2-3 to before * rpm Other versions: affected
Red Hat	Red Hat Network Satellite Server v 5.0 Package name: rhn_solaris_bootstrap_5_0_2_3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1-0 to before * rpm Other versions: affected
Red Hat	Red Hat Network Satellite Server v 5.1 Package name: rhn-solaris-bootstrap https://access.redhat.com/downloads/content/package-browser/	unaffected 0:5.1.1-3 to before * rpm Other versions: affected
Red Hat	Red Hat Network Satellite Server v 5.1 Package name: rhn_solaris_bootstrap_5_1_1_3 https://access.redhat.com/downloads/content/package-browser/	unaffected 0:1-0 to before * rpm Other versions: affected
Red Hat	Red Hat Enterprise Linux 10 Package name: edk2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 10 Package name: openssl https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 10 Package name: shim https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 10 Package name: shim-unsigned-aarch64 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 10 Package name: shim-unsigned-x64 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 6 Package name: openssl https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: openssl https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: ovmf https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: compat-openssl10 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: edk2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: mingw-openssl https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: openssl https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: shim https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: shim-unsigned-x64 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: compat-openssl11 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: edk2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: openssl https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: shim https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: shim-unsigned-aarch64 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: shim-unsigned-x64 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat JBoss Core Services Package name: openssl https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: unaffected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-8 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected

Identifiers: CVE-2006-4339
CNA: redhat
Weakness (CWE): CWE-347
Tags: Red Hat Enterprise Linux 3
Red Hat Enterprise Linux 4
Red Hat Network Satellite Server v 4.2
Red Hat Network Satellite Server v 4.2 (RHEL3)
Red Hat Network Satellite Server v 5.0
Red Hat Network Satellite Server v 5.1
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Weak cryptography or TLS
Published: 5 Sept 2006
Updated: 4 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.1	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	CNA (redhat)

CISA KEV Not listed.
EPSS 0.039, the 90th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

5 Sept 2006, 17:00 UTC Confirmed by the CVE List
5 Sept 2006, 17:04 UTC Confirmed by NVD

Sources

References from the CNA

And 177 more on the CVE record.

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.