{"id":"CVE-2026-45504","published":"2026-06-09T17:04:47Z","modified":"2026-09-24T13:43:48Z","title":"Microsoft Exchange Server Elevation of Privilege Vulnerability","vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 23","tier":"tail","description":{"text":"Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.","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":0.0118,"percentile":0.67585,"provenance":"source"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45504","tags":["vendor-advisory","patch"]}],"priority":{"score":24.7,"factors":[{"name":"EPSS percentile","points":13.52},{"name":"Public exploit code","points":5.0},{"name":"CVSS severity","points":6.16}]},"exploitSources":{"pocGithub":{"count":1,"skipped":0,"earliest":"2026-06-24","earliestUrl":"https://github.com/hawktrace/CVE-2026-45504","repos":[{"name":"hawktrace/CVE-2026-45504","url":"https://github.com/hawktrace/CVE-2026-45504","stars":64,"created":"2026-06-24"}]},"first":{"date":"2026-06-24","source":"PoC-in-GitHub","url":"https://github.com/hawktrace/CVE-2026-45504"},"provenance":"source"},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Microsoft Exchange Server 2016 Cumulative Update 23","versions":[">= 15.01.0.0, < 15.01.2507.071"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 14","versions":[">= 15.02.0.0, < 15.02.1544.043"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server 2019 Cumulative Update 15","versions":[">= 15.02.0.0, < 15.02.1748.048"]},{"vendor":"Microsoft","product":"Microsoft Exchange Server Subscription Edition RTM","versions":[">= 15.02.0.0, < 15.02.2562.045"]}],"euvd":{"id":"EUVD-2026-35680","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-exchange-server-cwe-918"}}