{"id":"CVE-2023-36744","published":"2023-09-12T16:58:32Z","modified":"2025-10-30T18:17:59Z","title":"Microsoft Exchange Server Remote Code Execution Vulnerability","vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 12","tier":"core","eol":null,"affectedVersions":[{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 12","versions":[">= 15.02.0, < 15.02.1118.037"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 23","versions":[">= 15.01.0, < 15.01.2507.032"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 13","versions":[">= 15.02.0, < 15.02.1258.025"]}],"description":{"text":"Microsoft Exchange Server Remote Code Execution Vulnerability","provenance":"source","from":"CVE.org"},"summary":{"text":"Microsoft Exchange Server 2019 Cumulative Update 12 contains a remote code execution flaw involving deserialization of untrusted data. An attacker with adjacent network access and low-privilege authentication, requiring no user interaction, can exploit it to achieve high impact on confidentiality, integrity and availability.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:17:25Z"},"cvss":{"score":8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:A/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":0.57112,"percentile":0.99068,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":0,"pulses":[],"provenance":"machine"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36744","tags":["vendor-advisory"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-40687","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-40687","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2023-09-12","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2023-36744","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":25.4,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":19.81,"detail":"percentile 0.9907"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":5.6,"detail":"base score 8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-microsoft-exchange-server-cwe-502"}}