{"id":"CVE-2023-21706","published":"2023-02-14T19:32:44Z","modified":"2026-08-19T16:26:36Z","title":"Microsoft Exchange Server Remote Code Execution Vulnerability","vendor":"Microsoft","product":"Microsoft Exchange Server 2013 Cumulative Update 23","tier":"tail","description":{"text":"Microsoft Exchange Server Remote Code Execution Vulnerability","provenance":"source","from":"CVE.org"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.04058,"percentile":0.90616,"provenance":"source"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21706","tags":["vendor-advisory","patch"]}],"priority":{"score":24.3,"factors":[{"name":"EPSS percentile","points":18.12},{"name":"CVSS severity","points":6.16}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Microsoft Exchange Server 2013 Cumulative Update 23","versions":[">= 15.00.0, < 15.00.1497.047"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 23","versions":[">= 15.01.0, < 15.01.2507.021"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 11","versions":[">= 15.02.0, < 15.02.0986.041"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 12","versions":[">= 15.02.0, < 15.02.1118.025"]}],"euvd":{"id":"EUVD-2023-25873","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-exchange-server-cwe-502"}}