etc/inc/certs.inc in the PKI implementation in pfSense before 2.0.1 creates each X.509…
Priority LOW 37CWE-264Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-264.
Summary
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.
Why it matters now
EPSS 0.01924 80th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:pfsense:pfsense:*:*:*:*:*:*:*:* | up to 2.0 | Vulnerable | pfSense |
| cpe:2.3:a:pfsense:pfsense:1.0.x:*:*:*:*:*:*:* | 1.0.x | Vulnerable | pfSense |
| cpe:2.3:a:pfsense:pfsense:1.2.1:*:*:*:*:*:*:* | 1.2.1 | Vulnerable | pfSense |
| cpe:2.3:a:pfsense:pfsense:1.2.2:*:*:*:*:*:*:* | 1.2.2 | Vulnerable | pfSense |
| cpe:2.3:a:pfsense:pfsense:1.2.3:*:*:*:*:*:*:* | 1.2.3 | Vulnerable | pfSense |
- cpe:2.3:a:pfsense:pfsense:*:*:*:*:*:*:*:* Versions up to 2.0 Vulnerable ·pfSense
- cpe:2.3:a:pfsense:pfsense:1.0.x:*:*:*:*:*:*:* Versions 1.0.x Vulnerable ·pfSense
- cpe:2.3:a:pfsense:pfsense:1.2.1:*:*:*:*:*:*:* Versions 1.2.1 Vulnerable ·pfSense
- cpe:2.3:a:pfsense:pfsense:1.2.2:*:*:*:*:*:*:* Versions 1.2.2 Vulnerable ·pfSense
- cpe:2.3:a:pfsense:pfsense:1.2.3:*:*:*:*:*:*:* Versions 1.2.3 Vulnerable ·pfSense
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4197
- 2026-10-03 Alias added: GHSA-wprp-q629-mgxj
References
Other 5
- https://github.com/bsdperimeter/pfsense/commit/87b4deb2b2dae9013e6aa0fe490d6a5a04a27894
- https://github.com/bsdperimeter/pfsense/commit/1379d66f11aaf72982a70287b83e24efcd18898e
- 20111222 [MATTA-2011-001] pfSense x509 Insecure Certificate Creation
- https://www.trustmatta.com/advisories/MATTA-2011-001.txt
- 77982
More Pfsense vulnerabilities
- TI-2023-11923 Improper restriction of excessive authentication attempts in the SSHGuard component of… CVSS 3.1CRITICAL 9.8
- TI-2021-18114 diag_routes.php in pfSense 2.5.2 allows sed data injection. CVSS 3.1HIGH 8.8
- TI-2025-42916 Netgate pfSense CE 2.8.0 allows code execution in the XMLRPC API via pfsense.exec_php. CVSS 3.1CRITICAL 9.9
- TI-2025-42915 Netgate pfSense CE 2.7.2 allows code execution by using the module installer with a… CVSS 3.1CRITICAL 9.1
- TI-2026-74961 OS command injection in Netgate pfSense CE traffic shaper limiters CVSS 4.0HIGH 8.6
- TI-2026-74960 OS command injection in Netgate pfSense CE via CARP VHID CVSS 4.0HIGH 8.6
Sources
- CVE-2011-4197 · CVE Program
- CVE-2011-4197 · NVD
- FIRST EPSS
- GHSA-wprp-q629-mgxj · GitHub Advisory Database · CC BY 4.0
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