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VULNERABILITIES

CVE-2026-40539 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.1 HIGHVector:CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.synology.com/en-global/security/advisory/Synology_SA_26_06 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-295Improper Certificate Validation[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-40539
NVD Published Date:
Sep 18, 2026
NVD Last Modified:
Sep 18, 2026
Source:
[email protected]
CVE-2026-40539 Details - Not Deferred