{"cve_id":"CVE-2025-53771","published":"2025-07-20T23:15:31.807000+00:00","last_modified":"2026-06-17T09:38:51.820000+00:00","vuln_status":"Analyzed","description":"Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","base_score":6.5,"base_severity":"MEDIUM","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"LOW","impact_i":"LOW","impact_a":"NONE","cwe_ids":["CWE-287"],"in_kev":false,"kev_date_added":null,"kev_ransomware":false,"epss_score":0.9989,"epss_percentile":0.99965,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["AUTH_BYPASS","INFO_DISCLOSURE","TAMPER"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T11:41:25.639182+00:00","first_seen":"2025-07-20T23:15:31.807000+00:00","kev_first_seen":null,"novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["microsoft"],"products":["sharepoint_server"],"affected":[{"vendor":"microsoft","product":"sharepoint_server","ranges":["< 16.0.18526.20508","2016","2019"]}]}