CVE-2011-4197

Name: CVE-2011-4197
Creator: NVD / NIST
Published: 2012-01-03T19:55:03.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.00%

Last modified Jun 16, 2026

CVE-2011-4197 is a vulnerability of currently unknown severity. etc/inc/certs.inc in the PKI implementation in pfSense before 2.0.1 creates each X.509 certificate with a true value for the CA basic constraint, which allows remote attackers to create sub-certificates for arbitrary subjects by leveraging the private key.. EPSS estimates a 2.00% chance of exploitation in the next 30 days.

Description

etc/inc/certs.inc in the PKI implementation in pfSense before 2.0.1 creates each X.509 certificate with a true value for the CA basic constraint, which allows remote attackers to create sub-certificates for arbitrary subjects by leveraging the private key.

Metrics

EPSS Probability

2.00%

78.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Pfsense	Pfsense	<= 2.0
Pfsense	Pfsense	1.0.x
Pfsense	Pfsense	1.2.1
Pfsense	Pfsense	1.2.2
Pfsense	Pfsense	1.2.3

References

Timeline

Published: Jan 3, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-4197?

How severe is CVE-2011-4197?

Severity scoring for CVE-2011-4197 is pending analysis. The EPSS model estimates a 2.00% probability of exploitation in the next 30 days.

How do I fix CVE-2011-4197?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-4197?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST