{"cve":{"cve_id":"CVE-2021-3553","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":0.0128,"epss_percentile":0.66266,"epss_as_of":"2026-06-23","description":"A Server-Side Request Forgery (SSRF) vulnerability in the EPPUpdateService of Bitdefender Endpoint Security Tools allows an attacker to use the Endpoint Protection relay as a proxy for any remote host. This issue affects: Bitdefender Endpoint Security Tools versions prior to 6.6.27.390; versions prior to 7.1.2.33. Bitdefender Unified Endpoint for Linux versions prior to 6.2.21.160. Bitdefender GravityZone versions prior to 6.24.1-1.","published_at":"2021-11-24T14:45:20.276000Z","last_modified_at":null,"cvss_v3_score":5.3,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-918"],"nvd_references":["https://www.bitdefender.com/support/security-advisories/server-side-request-forgery-eppupdateservice-remote-config-file-va-9825/"],"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":"2026-06-28T23:15:50.862185Z"},"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":"H","value_label":"High"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"R","value_label":"Required"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"bitdefender","vendor_name":"Bitdefender","product_slug":"endpoint-security-tools","product_name":"Endpoint Security Tools","version_start":"unspecified","version_start_inclusive":true,"version_end":"6.6.27.390","version_end_inclusive":false,"cpe23_uri":"cve5:bitdefender:endpoint-security-tools:unspecified:6.6.27.390"},{"vendor_slug":"bitdefender","vendor_name":"Bitdefender","product_slug":"endpoint-security-tools","product_name":"Endpoint Security Tools","version_start":"unspecified","version_start_inclusive":true,"version_end":"7.1.2.33","version_end_inclusive":false,"cpe23_uri":"cve5:bitdefender:endpoint-security-tools:unspecified:7.1.2.33"},{"vendor_slug":"bitdefender","vendor_name":"Bitdefender","product_slug":"gravityzone","product_name":"GravityZone","version_start":"unspecified","version_start_inclusive":true,"version_end":"6.24.1-1","version_end_inclusive":false,"cpe23_uri":"cve5:bitdefender:gravityzone:unspecified:6.24.1-1"},{"vendor_slug":"bitdefender","vendor_name":"Bitdefender","product_slug":"unified-endpoint-for-linux","product_name":"Unified Endpoint for Linux","version_start":"unspecified","version_start_inclusive":true,"version_end":"6.2.21.160","version_end_inclusive":false,"cpe23_uri":"cve5:bitdefender:unified-endpoint-for-linux:unspecified:6.2.21.160"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.bitdefender.com/support/security-advisories/server-side-request-forgery-eppupdateservice-remote-config-file-va-9825/","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2021-11-24T14:45:20.276000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:19:21.235572Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:19:21.235572Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:19:21.235572Z","label":"CVSS score revised","source":"cvelistv5"}]}