{"cve":{"cve_id":"CVE-2023-4785","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":0.00666,"epss_percentile":0.46982,"epss_as_of":"2026-06-23","description":"Lack of error handling in the TCP server in Google's gRPC starting version 1.23 on posix-compatible platforms (ex. Linux) allows an attacker to cause a denial of service by initiating a significant number of connections with the server. Note that gRPC C++ Python, and Ruby are affected, but gRPC Java, and Go are NOT affected.","published_at":"2023-09-13T16:31:55.664000Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"HIGH","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-248"],"nvd_references":["https://github.com/grpc/grpc/pull/33656","https://github.com/grpc/grpc/pull/33667","https://github.com/grpc/grpc/pull/33669","https://github.com/grpc/grpc/pull/33670","https://github.com/grpc/grpc/pull/33672"],"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":"2026-06-29T01:41:37.767234Z"},"effective_severity":"HIGH","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":"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":"google","vendor_name":"Google","product_slug":"grpc","product_name":"gRPC","version_start":"0","version_start_inclusive":true,"version_end":"1.23","version_end_inclusive":false,"cpe23_uri":"cve5:google:grpc:0:1.23"},{"vendor_slug":"google","vendor_name":"Google","product_slug":"grpc","product_name":"gRPC","version_start":"1.57","version_start_inclusive":true,"version_end":"1.57","version_end_inclusive":true,"cpe23_uri":"cve5:google:grpc:1.57:1.57"},{"vendor_slug":"google","vendor_name":"Google","product_slug":"grpc","product_name":"gRPC","version_start":"1.56.0","version_start_inclusive":true,"version_end":"1.56.1","version_end_inclusive":true,"cpe23_uri":"cve5:google:grpc:1.56.0:1.56.1"},{"vendor_slug":"google","vendor_name":"Google","product_slug":"grpc","product_name":"gRPC","version_start":"1.55.0","version_start_inclusive":true,"version_end":"1.55.2","version_end_inclusive":true,"cpe23_uri":"cve5:google:grpc:1.55.0:1.55.2"},{"vendor_slug":"google","vendor_name":"Google","product_slug":"grpc","product_name":"gRPC","version_start":"1.54.0","version_start_inclusive":true,"version_end":"1.54.2","version_end_inclusive":true,"cpe23_uri":"cve5:google:grpc:1.54.0:1.54.2"},{"vendor_slug":"google","vendor_name":"Google","product_slug":"grpc","product_name":"gRPC","version_start":"1.53.0","version_start_inclusive":true,"version_end":"1.53.1","version_end_inclusive":true,"cpe23_uri":"cve5:google:grpc:1.53.0:1.53.1"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/grpc/grpc/pull/33656","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/grpc/grpc/pull/33667","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/grpc/grpc/pull/33669","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/grpc/grpc/pull/33670","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/grpc/grpc/pull/33672","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2023-09-13T16:31:55.664000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:30:54.274701Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:30:54.274701Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:30:54.274701Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T01:41:37.767234Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:41:37.767234Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:41:37.767234Z","label":"SSVC decision revised","source":"vulnrichment"}]}