{"id":"CVE-2026-45503","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-45503","generatedAt":"2026-10-28T02:15:09.600Z","title":"Improper authorization in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.","description":"Improper authorization in Microsoft Exchange Server allows an authorized attacker to disclose information over a network.","published":"2026-06-09T17:17:26.000Z","lastModified":"2026-07-28T23:16:59.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-285","CWE-918"],"affected":["microsoft/exchange server","microsoft/exchange server subscription edition"],"epss":{"score":0.00445,"percentile":0.3847,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45503","tags":["Vendor Advisory"],"source":"secure@microsoft.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45503","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}