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CVE-2026-88266 synology diskstation manager (dsm)

4.3 mediumEPSS 0.4%

Medium (4.3) in synology diskstation manager (dsm). EPSS 0.4% estimated probability of exploitation activity in the next 30 days.

On this page
An external control of system or configuration setting vulnerability in the synomount in Synology DiskStation Manager (DSM) before 7.3.2-86009-5 and 7.4.1-90080-1 allows remote authenticated users to write specific files.

Severity

CVSS 3.1

4.3 medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS
0.4% estimated probability of exploitation activity in the next 30 days; 38th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-15 External Control of System or Configuration Setting
OWASP Top 10
A02:2025 Security Misconfiguration
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-13 Subverting Environment Variable Values Likelihood: High · Severity: Very High
  • CAPEC-69 Target Programs with Elevated Privileges Likelihood: High · Severity: Very High
  • CAPEC-76 Manipulating Web Input to File System Calls Likelihood: High · Severity: Very High
  • CAPEC-77 Manipulating User-Controlled Variables Likelihood: High · Severity: Very High
  • CAPEC-146 XML Schema Poisoning Likelihood: Low · Severity: High
  • CAPEC-176 Configuration/Environment Manipulation Severity: Medium
  • CAPEC-203 Manipulate Registry Information Severity: Medium
  • CAPEC-270 Modification of Registry Run Keys Likelihood: Medium · Severity: Medium
  • CAPEC-271 Schema Poisoning Likelihood: Low · Severity: High
  • CAPEC-579 Replace Winlogon Helper DLL

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

References

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