{"cve":{"cve_id":"CVE-2009-4420","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":0.02221,"epss_percentile":0.8038,"epss_as_of":"2026-06-23","description":"Buffer overflow in the bd daemon in F5 Networks BIG-IP Application Security Manager (ASM) 9.4.4 through 9.4.7 and 10.0.0 through 10.0.1, and Protocol Security Manager (PSM) 9.4.5 through 9.4.7 and 10.0.0 through 10.0.1, allows remote attackers to cause a denial of service (crash) via unknown vectors.  NOTE: some of these details are obtained from third party information.","published_at":"2009-12-24T17:00:00Z","last_modified_at":"2026-06-16T23:13:38.100000Z","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-119"],"nvd_references":["http://www.securitytracker.com/id?1023386","https://support.f5.com/kb/en-us/solutions/public/10000/400/sol10417.html","http://osvdb.org/61297","https://exchange.xforce.ibmcloud.com/vulnerabilities/55005","http://www.vupen.com/english/advisories/2009/3627","http://secunia.com/advisories/37805","http://www.securityfocus.com/bid/37452"],"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":"2026-06-28T23:05:15.315230Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-application-security-manager","product_name":"big-ip_application_security_manager","version_start":"10.0.1","version_start_inclusive":true,"version_end":"10.0.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_application_security_manager:10.0.1:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-application-security-manager","product_name":"big-ip_application_security_manager","version_start":"9.4.4","version_start_inclusive":true,"version_end":"9.4.4","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_application_security_manager:9.4.4:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-application-security-manager","product_name":"big-ip_application_security_manager","version_start":"9.4.5","version_start_inclusive":true,"version_end":"9.4.5","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_application_security_manager:9.4.5:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-application-security-manager","product_name":"big-ip_application_security_manager","version_start":"9.4.6","version_start_inclusive":true,"version_end":"9.4.6","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_application_security_manager:9.4.6:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-application-security-manager","product_name":"big-ip_application_security_manager","version_start":"9.4.7","version_start_inclusive":true,"version_end":"9.4.7","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_application_security_manager:9.4.7:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-application-security-manager","product_name":"big-ip_application_security_manager","version_start":"10.0.0","version_start_inclusive":true,"version_end":"10.0.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_application_security_manager:10.0.0:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-protocol-security-manager","product_name":"big-ip_protocol_security_manager","version_start":"10.0.1","version_start_inclusive":true,"version_end":"10.0.1","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_protocol_security_manager:10.0.1:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-protocol-security-manager","product_name":"big-ip_protocol_security_manager","version_start":"9.4.5","version_start_inclusive":true,"version_end":"9.4.5","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_protocol_security_manager:9.4.5:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-protocol-security-manager","product_name":"big-ip_protocol_security_manager","version_start":"9.4.6","version_start_inclusive":true,"version_end":"9.4.6","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_protocol_security_manager:9.4.6:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-protocol-security-manager","product_name":"big-ip_protocol_security_manager","version_start":"9.4.7","version_start_inclusive":true,"version_end":"9.4.7","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:h:f5:big-ip_protocol_security_manager:9.4.7:*:*:*:*:*:*:*"},{"vendor_slug":"f5","vendor_name":"F5","product_slug":"big-ip-protocol-security-module","product_name":"big-ip_protocol_security_module","version_start":"10.0.0","version_start_inclusive":true,"version_end":"10.0.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:f5:big-ip_protocol_security_module:10.0.0:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"http://www.securitytracker.com/id?1023386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published","source":null}]}