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CVE-2026-15201 synology diskstation manager (dsm): Improper Certificate Validation

5.9 mediumEPSS 0.1%

Medium (5.9) in synology diskstation manager (dsm). EPSS 0.1% estimated probability of exploitation activity in the next 30 days.

On this page
An improper certificate validation vulnerability in the Support Form in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows man-in-the-middle attackers to read arbitrary files and write specific files during support form submission.

Severity

CVSS 3.1

5.9 medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N
EPSS
0.1% estimated probability of exploitation activity in the next 30 days; 4th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-295 Improper Certificate Validation
OWASP Top 10
A07:2025 Authentication Failures
Published
Modified
Assigned by
synology (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • synology:diskstation manager (dsm)

Versions

From the CNA's record in the CVE List.

ProductAffected
Synology DiskStation Manager (DSM)from 7.4.1 before 7.4.1-90080-1
Synology DiskStation Manager (DSM)from 7.3.2 before 7.3.2-86009-5

Attack patterns (CAPEC)

  • CAPEC-459 Creating a Rogue Certification Authority Certificate Likelihood: Medium · Severity: Very High
  • CAPEC-475 Signature Spoofing by Improper Validation Likelihood: Low · Severity: High

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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