{"id":"CVE-2026-62912","aliases":["EUVD-2026-56414","GHSA-97wg-gxw5-r3h4"],"status":"published","title":"Microsoft Exchange Server Denial of Service Vulnerability","description":"Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service 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:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01976,"percentile":0.80793,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-08-11T17:04:44Z","modified":"2026-11-10T21:58:25Z","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-2026-62912","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62912"},{"url":"https://github.com/advisories/GHSA-97wg-gxw5-r3h4"}],"sources":{"cve":[{"id":"CVE-2026-62912","title":"Microsoft Exchange Server Denial of Service Vulnerability","description":"Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-08-11T17:04:44.306Z","modified":"2026-11-10T21:58:25.703Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-10T22:48:52.144232Z"}],"euvd":[{"id":"EUVD-2026-56414","description":"Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-08-11T17:04:44Z","modified":"2026-11-10T21:58:25Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T23:24:17.839385Z"}],"ghsa":[{"id":"GHSA-97wg-gxw5-r3h4","title":"Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to...","description":"Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-08-11T18:31:30Z","modified":"2026-08-11T18:31:34Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:10:19.387522Z"}],"nvd":[{"id":"CVE-2026-62912","description":"Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.","status":"published","published":"2026-08-11T17:18:45.197Z","modified":"2026-08-13T18:57:36.45Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}