{"cve":{"cve_id":"CVE-2024-6343","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":0.00605,"epss_percentile":0.44282,"epss_as_of":"2026-06-23","description":"A buffer overflow vulnerability in the CGI program of Zyxel ATP series firmware versions from V4.32 through V5.38, USG FLEX series firmware versions from V4.50 through V5.38, USG FLEX 50(W) series firmware versions from V4.16 through V5.38, and USG20(W)-VPN series firmware versions from V4.16 through V5.38 could allow an authenticated attacker with administrator privileges to cause denial of service (DoS) conditions by sending a crafted HTTP request to a vulnerable device.","published_at":"2024-09-03T01:28:27.056000Z","last_modified_at":null,"cvss_v3_score":4.9,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":false,"ssvc_technical_impact":"partial","cwes":["CWE-120"],"nvd_references":["https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-09-03-2024"],"vuln_status":null,"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":"2026-06-29T02:20:07.496563Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","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":"H","value_label":"High"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"zyxel","vendor_name":"Zyxel","product_slug":"atp-series-firmware","product_name":"ATP series firmware","version_start":"versions V4.32 through V5.38","version_start_inclusive":true,"version_end":"versions V4.32 through V5.38","version_end_inclusive":true,"cpe23_uri":"cve5:zyxel:atp-series-firmware:versions V4.32 through V5.38:versions V4.32 through V5.38"},{"vendor_slug":"zyxel","vendor_name":"Zyxel","product_slug":"usg20-w-vpn-series-firmware","product_name":"USG20(W)-VPN series firmware","version_start":"versions V4.16 through V5.38","version_start_inclusive":true,"version_end":"versions V4.16 through V5.38","version_end_inclusive":true,"cpe23_uri":"cve5:zyxel:usg20-w-vpn-series-firmware:versions V4.16 through V5.38:versions V4.16 through V5.38"},{"vendor_slug":"zyxel","vendor_name":"Zyxel","product_slug":"usg-flex-50-w-series-firmware","product_name":"USG FLEX 50(W) series firmware","version_start":"versions V4.16 through V5.38","version_start_inclusive":true,"version_end":"versions V4.16 through V5.38","version_end_inclusive":true,"cpe23_uri":"cve5:zyxel:usg-flex-50-w-series-firmware:versions V4.16 through V5.38:versions V4.16 through V5.38"},{"vendor_slug":"zyxel","vendor_name":"Zyxel","product_slug":"usg-flex-series-firmware","product_name":"USG FLEX series firmware","version_start":"versions V4.50 through V5.38","version_start_inclusive":true,"version_end":"versions V4.50 through V5.38","version_end_inclusive":true,"cpe23_uri":"cve5:zyxel:usg-flex-series-firmware:versions V4.50 through V5.38:versions V4.50 through V5.38"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-firewalls-09-03-2024","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2024-09-03T01:28:27.056000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:39:59.661105Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:39:59.661105Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:39:59.661105Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T02:20:07.496563Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T02:20:07.496563Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T02:20:07.496563Z","label":"SSVC decision revised","source":"vulnrichment"}]}