{"id":"CVE-2026-62915","aliases":["EUVD-2026-56417","GHSA-255v-3pqf-6g77"],"status":"published","title":"Microsoft Exchange Server Security Feature Bypass Vulnerability","description":"Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00644,"percentile":0.514,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-08-11T17:04:45Z","modified":"2026-11-10T21:58:29Z","products":[{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"exchange_server_subscription_edition"},{"vendor":"microsoft","product":"microsoft exchange server 2016 cumulative update 23"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 14"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 15"},{"vendor":"microsoft","product":"microsoft exchange server subscription edition rtm"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62915","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62915"},{"url":"https://github.com/advisories/GHSA-255v-3pqf-6g77"}],"sources":{"cve":[{"id":"CVE-2026-62915","title":"Microsoft Exchange Server Security Feature Bypass Vulnerability","description":"Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.","status":"published","published":"2026-08-11T17:04:45.972Z","modified":"2026-11-10T21:58:29.665Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-10T22:48:52.144232Z"}],"euvd":[{"id":"EUVD-2026-56417","description":"Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.","status":"published","published":"2026-08-11T17:04:45Z","modified":"2026-11-10T21:58:29Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T23:24:17.839385Z"}],"ghsa":[{"id":"GHSA-255v-3pqf-6g77","title":"Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a...","description":"Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.","status":"published","published":"2026-08-11T18:31:30Z","modified":"2026-08-11T18:31:30Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:10:19.387522Z"}],"nvd":[{"id":"CVE-2026-62915","description":"Missing authorization in Microsoft Exchange Server allows an authorized attacker to bypass a security feature over a network.","status":"published","published":"2026-08-11T17:18:45.57Z","modified":"2026-08-14T15:21:48.577Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}