{"cve":{"cve_id":"CVE-2019-1978","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":0.09382,"epss_percentile":0.95022,"epss_as_of":"2026-08-26","description":"A vulnerability in the stream reassembly component of Cisco Firepower Threat Defense Software, Cisco FirePOWER Services Software for ASA, and Cisco Firepower Management Center Software could allow an unauthenticated, remote attacker to bypass filtering protections. The vulnerability is due to improper reassembly of traffic streams. An attacker could exploit this vulnerability by sending crafted streams through an affected device. An exploit could allow the attacker to bypass filtering and deliver malicious requests to protected systems that would otherwise be blocked.","published_at":"2019-11-05T19:35:41.101000Z","last_modified_at":"2026-08-11T19:37:30.880000Z","cvss_v3_score":5.8,"cvss_v3_vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-264"],"nvd_references":["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190816-ftd-srb"],"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":"2026-08-13T20:20:23.063882Z"},"effective_severity":"MEDIUM","badges":["exploit"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"cisco-firepower-threat-defense-software","product_name":"Cisco Firepower Threat Defense Software","version_start":"unspecified","version_start_inclusive":true,"version_end":"n/a","version_end_inclusive":false,"cpe23_uri":"cve5:cisco:cisco-firepower-threat-defense-software:unspecified:n/a"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"firepower-services-software-for-asa","product_name":"firepower_services_software_for_asa","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:cisco:firepower_services_software_for_asa:*:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"secure-firewall-management-center","product_name":"secure_firewall_management_center","version_start":"2.9.12","version_start_inclusive":true,"version_end":"2.9.12.15","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:secure_firewall_management_center:*:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"secure-firewall-management-center","product_name":"secure_firewall_management_center","version_start":"2.9.15","version_start_inclusive":true,"version_end":"2.9.15","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:secure_firewall_management_center:2.9.15:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"secure-firewall-management-center","product_name":"secure_firewall_management_center","version_start":"2.9.16","version_start_inclusive":true,"version_end":"2.9.16","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:cisco:secure_firewall_management_center:2.9.16:*:*:*:*:*:*:*"},{"vendor_slug":"cisco","vendor_name":"Cisco","product_slug":"secure-firewall-threat-defense","product_name":"secure_firewall_threat_defense","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:cisco:secure_firewall_threat_defense:*:*:*:*:*:*:*:*"}],"exploit_refs":[{"source":"exploit-db","kind":"exploit-db","url":"https://www.exploit-db.com/exploits/47902","title":"Citrix Application Delivery Controller and Citrix Gateway - Remote Code Execution","author":"TrustedSec","disclosed_at":"2020-01-11"}],"news":[],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190816-ftd-srb","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2019-11-05T19:35:41.101000Z","label":"CVE published","source":null},{"type":"exploit_known","at":"2020-01-11T00:00:00Z","label":"Public exploit available","source":"exploit-db"},{"type":"ssvc_changed","at":"2026-06-24T00:31:21.178621Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:21.178621Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:21.178621Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:21.178621Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:21.178621Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:21.178621Z","label":"CVSS score revised","source":"vulnrichment"}]}