{"cve":{"cve_id":"CVE-2026-73453","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":0.00695,"epss_percentile":0.51977,"epss_as_of":"2026-10-15","description":"An unauthenticated P4Runtime (Programming Protocol-Independent Packet Processors Runtime) client can achieve arbitrary code execution under certain conditions on affected platforms running Arista EOS configured with P4Runtime. P4Runtime is disabled by default in Arista EOS. By crafting a malicious packet during the initiation of a P4Runtime session, an attacker can obtain complete administrative control over the compromised switch.\n\nThis issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.","published_at":"2026-09-16T09:46:33.548000Z","last_modified_at":"2026-09-17T04:17:59.823000Z","cvss_v3_score":10.0,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":9.5,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","cvss_v4_severity":"CRITICAL","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-94"],"nvd_references":["https://www.arista.com/en/support/advisories-notices/security-advisory/24730-security-advisory-0174"],"vuln_status":"Awaiting Analysis","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":"2026-09-16T11:03:42.089224Z","updated_at":"2026-09-18T12:32:27.349964Z"},"effective_severity":"CRITICAL","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":"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":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"P","value_label":"Present"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"H","value_label":"High"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"H","value_label":"High"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"H","value_label":"High"},{"metric":"SA","name":"Availability (Subsequent System)","value":"H","value_label":"High"}]},"affected":[{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"eos","product_name":"EOS","version_start":"4.36.0F","version_start_inclusive":true,"version_end":"4.36.1F","version_end_inclusive":true,"cpe23_uri":"cve5:arista-networks:eos:4.36.0F:4.36.1F"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"eos","product_name":"EOS","version_start":"4.35.0F","version_start_inclusive":true,"version_end":"4.35.5M","version_end_inclusive":true,"cpe23_uri":"cve5:arista-networks:eos:4.35.0F:4.35.5M"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"eos","product_name":"EOS","version_start":"4.34.0F","version_start_inclusive":true,"version_end":"4.34.7M","version_end_inclusive":true,"cpe23_uri":"cve5:arista-networks:eos:4.34.0F:4.34.7M"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"eos","product_name":"EOS","version_start":"4.33.0F","version_start_inclusive":true,"version_end":"4.34.0F","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:eos:4.33.0F:4.34.0F"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"eos","product_name":"EOS","version_start":"4.32.0F","version_start_inclusive":true,"version_end":"4.33.0F","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:eos:4.32.0F:4.33.0F"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"eos","product_name":"EOS","version_start":"4.31.0F","version_start_inclusive":true,"version_end":"4.32.0F","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:eos:4.31.0F:4.32.0F"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"eos","product_name":"EOS","version_start":"4.30.0F","version_start_inclusive":true,"version_end":"4.31.0F","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:eos:4.30.0F:4.31.0F"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"eos","product_name":"EOS","version_start":"4.29.2F","version_start_inclusive":true,"version_end":"4.30.0F","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:eos:4.29.2F:4.30.0F"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24730-security-advisory-0174","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-09-16T09:46:33.548000Z","label":"CVE published","source":null}]}