{"id":"CVE-2026-70264","aliases":["EUVD-2026-100136","GHSA-878h-ggqr-r6qq"],"status":"published","title":"Microsoft Defender Information Disclosure Vulnerability","description":"Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00488,"percentile":0.4227,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-59"],"published":"2026-10-13T19:01:09Z","modified":"2026-10-31T18:10:21Z","products":[{"vendor":"microsoft","product":"windows defender"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70264","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70264"},{"url":"https://github.com/advisories/GHSA-878h-ggqr-r6qq"}],"sources":{"cve":[{"id":"CVE-2026-70264","title":"Microsoft Defender Information Disclosure Vulnerability","description":"Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.","status":"published","published":"2026-10-13T19:01:09.957Z","modified":"2026-10-31T18:10:21.987Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T13:35:33.380441Z"}],"euvd":[{"id":"EUVD-2026-100136","description":"Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.","status":"published","published":"2026-10-13T19:01:09Z","modified":"2026-10-31T18:10:21Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T16:58:51.754038Z"}],"ghsa":[{"id":"GHSA-878h-ggqr-r6qq","title":"Improper link resolution before file access ('link following') in Microsoft Defender allows an...","description":"Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.","status":"published","published":"2026-10-13T21:34:19Z","modified":"2026-10-13T21:34:24Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T15:13:15.646152Z"}],"nvd":[{"id":"CVE-2026-70264","description":"Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to disclose information locally.","status":"published","published":"2026-10-13T19:19:45.183Z","modified":"2026-10-13T21:18:14.32Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-59"],"updated_at":"2026-11-02T14:12:57.603498Z"}]}}