{"id":"CVE-2026-40539","published":"2026-09-18T09:16:41.423","lastModified":"2026-09-18T19:07:38.320","description":"An improper certificate validation vulnerability in Email API in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows man-in-the-middle attackers to read or write arbitrary files and conduct denial-of-service attacks.","cvssScore":7.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-295"],"vendors":[],"products":[],"references":[{"url":"https://www.synology.com/en-global/security/advisory/Synology_SA_26_06","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}