{"cve":{"cve_id":"CVE-2021-20838","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":0.01471,"epss_percentile":0.70397,"epss_as_of":"2026-06-23","description":"Office Server Document Converter V7.2MR4 and earlier and V7.1MR7 and earlier allows a remote unauthenticated attacker to conduct an XML External Entity (XXE) attack to cause a denial of service (DoS) condition by processing a specially crafted XML document.","published_at":"2021-11-01T01:50:14Z","last_modified_at":null,"cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"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":null,"nvd_references":["https://www.antenna.co.jp/news/2021/osdc72-20211027.html","https://jvn.jp/en/jp/JVN33453839/index.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":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:14:55.844827Z"},"effective_severity":null,"badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"antenna-house-inc.","vendor_name":"Antenna House, Inc.","product_slug":"office-server-document-converter","product_name":"Office Server Document Converter","version_start":"V7.2MR4 and earlier and V7.1MR7 and earlier","version_start_inclusive":true,"version_end":"V7.2MR4 and earlier and V7.1MR7 and earlier","version_end_inclusive":true,"cpe23_uri":"cve5:antenna-house-inc.:office-server-document-converter:V7.2MR4 and earlier and V7.1MR7 and earlier:V7.2MR4 and earlier and V7.1MR7 and earlier"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.antenna.co.jp/news/2021/osdc72-20211027.html","source_type":"MISC","tags":[]},{"url":"https://jvn.jp/en/jp/JVN33453839/index.html","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2021-11-01T01:50:14Z","label":"CVE published","source":null}]}