{"id":"CVE-2023-36035","published":"2023-11-14T17:57:34Z","modified":"2025-10-08T23:59:57Z","title":"Microsoft Exchange Server Spoofing Vulnerability","vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 23","tier":"core","eol":null,"affectedVersions":[{"vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 23","versions":[">= 15.01.0, < 15.01.2507.035"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 12","versions":[">= 15.02.0, < 15.02.1118.040"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 13","versions":[">= 15.02.0, < 15.02.1258.028"]}],"description":{"text":"Microsoft Exchange Server Spoofing Vulnerability","provenance":"source","from":"CVE.org"},"summary":{"text":"Microsoft Exchange Server 2016 Cumulative Update 23 contains a spoofing vulnerability, classified as deserialization of untrusted data. An attacker with adjacent network access and low-privilege authentication, requiring no user interaction, could exploit it to compromise confidentiality, integrity and availability.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-29T07:15:11Z"},"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":0.86588,"percentile":0.99738,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":1,"pulses":[{"name":"Microsoft November 2023 Patch Tuesday","url":"https://otx.alienvault.com/pulse/6556309dcc4f09e80664bcf4","created":"2023-11-16"}],"provenance":"machine"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36035","tags":["vendor-advisory"]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2023-40019","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-40019","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2023-11-14","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2023-36035","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":26.2,"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":19.95,"detail":"percentile 0.9974"},{"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":0.68,"detail":"1 pulse"},{"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"}}