{"cve":{"cve_id":"CVE-2023-34048","is_kev":true,"kev_date_added":"2024-01-22","kev_vendor_project":"VMware","kev_product":"vCenter Server","kev_vulnerability_name":"VMware vCenter Server Out-of-Bounds Write Vulnerability","kev_short_description":"VMware vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol that allows an attacker to conduct remote code execution.","kev_required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","kev_due_date":"2024-02-12","kev_known_ransomware":false,"kev_notes":"https://www.vmware.com/security/advisories/VMSA-2023-0023.html;  https://nvd.nist.gov/vuln/detail/CVE-2023-34048","kev_cwes":["CWE-787"],"epss_score":0.99428,"epss_percentile":0.99936,"epss_as_of":"2026-06-23","description":"vCenter Server contains an out-of-bounds write vulnerability in the implementation of the DCERPC protocol. A malicious actor with network access to vCenter Server may trigger an out-of-bounds write potentially leading to remote code execution.","published_at":"2023-10-25T04:21:42.267000Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-787"],"nvd_references":["https://www.vmware.com/security/advisories/VMSA-2023-0023.html"],"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":"2026-06-24T00:09:31.350578Z","updated_at":"2026-06-29T01:32:05.751995Z"},"effective_severity":"CRITICAL","badges":["kev","poc","epss"],"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":"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":null,"metrics":[]},"affected":[{"vendor_slug":"vmware","vendor_name":"VMware","product_slug":"vmware-cloud-foundation-vmware-vcenter-server","product_name":"VMware Cloud Foundation (VMware vCenter Server)","version_start":"5.x","version_start_inclusive":true,"version_end":"5.x","version_end_inclusive":true,"cpe23_uri":"cve5:vmware:vmware-cloud-foundation-vmware-vcenter-server:5.x:5.x"},{"vendor_slug":"vmware","vendor_name":"VMware","product_slug":"vmware-cloud-foundation-vmware-vcenter-server","product_name":"VMware Cloud Foundation (VMware vCenter Server)","version_start":"4.x","version_start_inclusive":true,"version_end":"4.x","version_end_inclusive":true,"cpe23_uri":"cve5:vmware:vmware-cloud-foundation-vmware-vcenter-server:4.x:4.x"},{"vendor_slug":"vmware","vendor_name":"VMware","product_slug":"vmware-vcenter-server","product_name":"VMware vCenter Server","version_start":"8.0","version_start_inclusive":true,"version_end":"8.0U2","version_end_inclusive":false,"cpe23_uri":"cve5:vmware:vmware-vcenter-server:8.0:8.0U2"},{"vendor_slug":"vmware","vendor_name":"VMware","product_slug":"vmware-vcenter-server","product_name":"VMware vCenter Server","version_start":"7.0","version_start_inclusive":true,"version_end":"7.0U3o","version_end_inclusive":false,"cpe23_uri":"cve5:vmware:vmware-vcenter-server:7.0:7.0U3o"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-34048.yaml","title":"VMware vCenter Server - Out-of-Bounds Write","author":"ritikchaddha","disclosed_at":null}],"news":[],"references":[{"url":"https://www.vmware.com/security/advisories/VMSA-2023-0023.html","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2023-10-25T04:21:42.267000Z","label":"CVE published","source":null},{"type":"cisa_reported","at":"2024-01-22T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"poc_available","at":"2026-06-24T00:29:48.638073Z","label":"Public PoC available","source":"nuclei"},{"type":"cvss_changed","at":"2026-06-28T17:28:44.810189Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:28:44.810189Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:28:44.810189Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T01:32:05.751995Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:32:05.751995Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:32:05.751995Z","label":"SSVC decision revised","source":"vulnrichment"}]}