{"cve":{"cve_id":"CVE-2011-4197","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.01924,"epss_percentile":0.79557,"epss_as_of":"2026-10-15","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.","published_at":"2012-01-03T19:00:00Z","last_modified_at":"2026-06-16T23:34:34.497000Z","cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-264"],"nvd_references":["http://www.securityfocus.com/bid/51169","https://github.com/bsdperimeter/pfsense/commit/87b4deb2b2dae9013e6aa0fe490d6a5a04a27894","https://github.com/bsdperimeter/pfsense/commit/1379d66f11aaf72982a70287b83e24efcd18898e","http://archives.neohapsis.com/archives/bugtraq/2011-12/0152.html","https://www.trustmatta.com/advisories/MATTA-2011-001.txt","https://exchange.xforce.ibmcloud.com/vulnerabilities/71969","http://www.osvdb.org/77982","http://secunia.com/advisories/46780"],"vuln_status":"Modified","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:06:01.608004Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"pfsense","vendor_name":"pfSense","product_slug":"pfsense","product_name":"pfsense","version_start":null,"version_start_inclusive":null,"version_end":"2.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:pfsense:pfsense:*:*:*:*:*:*:*:*"},{"vendor_slug":"pfsense","vendor_name":"pfSense","product_slug":"pfsense","product_name":"pfsense","version_start":"1.0.x","version_start_inclusive":true,"version_end":"1.0.x","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:pfsense:pfsense:1.0.x:*:*:*:*:*:*:*"},{"vendor_slug":"pfsense","vendor_name":"pfSense","product_slug":"pfsense","product_name":"pfsense","version_start":"1.2.1","version_start_inclusive":true,"version_end":"1.2.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:pfsense:pfsense:1.2.1:*:*:*:*:*:*:*"},{"vendor_slug":"pfsense","vendor_name":"pfSense","product_slug":"pfsense","product_name":"pfsense","version_start":"1.2.2","version_start_inclusive":true,"version_end":"1.2.2","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:pfsense:pfsense:1.2.2:*:*:*:*:*:*:*"},{"vendor_slug":"pfsense","vendor_name":"pfSense","product_slug":"pfsense","product_name":"pfsense","version_start":"1.2.3","version_start_inclusive":true,"version_end":"1.2.3","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:pfsense:pfsense:1.2.3:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"http://www.securityfocus.com/bid/51169","source_type":"MISC","tags":[]},{"url":"https://github.com/bsdperimeter/pfsense/commit/87b4deb2b2dae9013e6aa0fe490d6a5a04a27894","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/bsdperimeter/pfsense/commit/1379d66f11aaf72982a70287b83e24efcd18898e","source_type":"PATCH","tags":["patch"]},{"url":"http://archives.neohapsis.com/archives/bugtraq/2011-12/0152.html","source_type":"MISC","tags":[]},{"url":"https://www.trustmatta.com/advisories/MATTA-2011-001.txt","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/71969","source_type":"MISC","tags":[]},{"url":"http://www.osvdb.org/77982","source_type":"MISC","tags":[]},{"url":"http://secunia.com/advisories/46780","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2012-01-03T19:00:00Z","label":"CVE published","source":null}]}