{"id":"CVE-2026-54123","aliases":["EUVD-2026-56418","GHSA-r3qc-9p9g-q746"],"status":"published","title":"Microsoft Defender for Endpoint for Mac Information Disclosure Vulnerability","description":"Exposure of sensitive information to an unauthorized actor in Microsoft Defender for Endpoint 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":"2026-11-12","score":0.00479,"percentile":0.41826,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2026-08-11T17:04:46Z","modified":"2026-11-10T21:58:30Z","products":[{"vendor":"microsoft","product":"defender_for_endpoint"},{"vendor":"microsoft","product":"microsoft defender for endpoint for mac"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54123","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54123"},{"url":"https://github.com/advisories/GHSA-r3qc-9p9g-q746"}],"sources":{"cve":[{"id":"CVE-2026-54123","title":"Microsoft Defender for Endpoint for Mac Information Disclosure Vulnerability","description":"Exposure of sensitive information to an unauthorized actor in Microsoft Defender for Endpoint allows an authorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:04:46.507Z","modified":"2026-11-10T21:58:30.263Z","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-200"],"updated_at":"2026-11-10T22:48:51.483784Z"}],"euvd":[{"id":"EUVD-2026-56418","description":"Exposure of sensitive information to an unauthorized actor in Microsoft Defender for Endpoint allows an authorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:04:46Z","modified":"2026-11-10T21:58:30Z","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":"2026-11-10T23:24:17.839385Z"}],"ghsa":[{"id":"GHSA-r3qc-9p9g-q746","title":"Exposure of sensitive information to an unauthorized actor in Microsoft Defender for Endpoint...","description":"Exposure of sensitive information to an unauthorized actor in Microsoft Defender for Endpoint allows an authorized attacker to disclose information locally.","status":"published","published":"2026-08-11T18:30:58Z","modified":"2026-08-11T18:30:59Z","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-200"],"updated_at":"2026-11-02T15:10:18.151039Z"}],"nvd":[{"id":"CVE-2026-54123","description":"Exposure of sensitive information to an unauthorized actor in Microsoft Defender for Endpoint allows an authorized attacker to disclose information locally.","status":"published","published":"2026-08-11T17:18:03.647Z","modified":"2026-10-24T16:10:00.153Z","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-200"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}