{"id":"CVE-2018-8927","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-8927","generatedAt":"2026-10-28T23:38:43.809Z","title":"Improper authorization vulnerability in SYNO.Cal.Event in Calendar before 2.1.2-0511 allows remote authenticated users to create arbitrary events via the (1) cal_id or (2) original_cal_id parameter.","description":"Improper authorization vulnerability in SYNO.Cal.Event in Calendar before 2.1.2-0511 allows remote authenticated users to create arbitrary events via the (1) cal_id or (2) original_cal_id parameter.","published":"2018-06-14T14:29:00.000Z","lastModified":"2026-06-17T02:05:40.000Z","status":"Modified","sourceIdentifier":"security@synology.com","cvss":{"version":"3.0","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-863"],"affected":["synology/calendar"],"epss":{"score":0.00907,"percentile":0.59703,"date":"2026-10-27","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 (0.91%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.synology.com/en-global/support/security/Synology_SA_18_16","tags":["Vendor Advisory"],"source":"security@synology.com"},{"url":"https://www.synology.com/en-global/support/security/Synology_SA_18_16","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-8927","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."}