{"id":"CVE-2026-62912","published":"2026-08-11T17:04:44Z","modified":"2026-10-30T17:20:30Z","title":"Microsoft Exchange Server Denial of Service Vulnerability","vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 23","tier":"tail","description":{"text":"Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.","provenance":"source","from":"CVE.org"},"cvss":{"score":6.5,"severity":"MEDIUM","version":"3.1","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","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.01976,"percentile":0.80478,"provenance":"source"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62912","tags":["vendor-advisory","patch"]}],"priority":{"score":20.6,"factors":[{"name":"EPSS percentile","points":16.1},{"name":"CVSS severity","points":4.55}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 23","versions":[">= 15.01.0.0, < 15.01.2507.072"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 14","versions":[">= 15.02.0.0, < 15.02.1544.044"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 15","versions":[">= 15.02.0.0, < 15.02.1748.049"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server Subscription Edition RTM","versions":[">= 15.02.0.0, < 15.02.2562.046"]}],"euvd":{"id":"EUVD-2026-56414","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-exchange-server-cwe-502"}}