HIGH 7.1 NVD

CVE-2026-40539

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 allow

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.

References

https://www.synology.com/en-global/security/advisory/Synology_SA_26_06

Published: 2026-09-18 · Source: NVD · Feed updated: 2026-09-18

This high severity vulnerability with a CVSS score of 7.1 was published on 2026-09-18 via NVD.

vulnfeed aggregates 14509 vulnerabilities from NVD, CISA KEV, Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.