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Vulnerabilities

Vulnerability · CVE-2017-16766

An improper access control vulnerability in synodsmnotify in Synology DiskStation Manager (DSM) before 6.1.4-15217 and before 6.0.3-8754-6 allows local users to inject…

Published Dec 22, 2017 · catalog updated Jun 17, 2026 · diskstation manager

Last checked Nov 9, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2017-16766. EPSS is 0.74%. Act only if a listed version of diskstation manager is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.74%
Remediation
Version ranges on file
Affected products
cpe synology/diskstation manager

An improper access control vulnerability in synodsmnotify in Synology DiskStation Manager (DSM) before 6.1.4-15217 and before 6.0.3-8754-6 allows local users to inject arbitrary web script or HTML via the -fn option.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe synology/diskstation manager< 6.0.3-8754-6
  • cpe synology/diskstation manager< 6.1.4-15217

How to fix CVE-2017-16766

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2017-16766. EPSS is 0.74%. Act only if a listed version of diskstation manager is installed.

Which versions are affected?

Compare what you have installed with synology/diskstation manager < 6.0.3-8754-6; synology/diskstation manager < 6.1.4-15217. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-284: Improper Access Control; CWE-74: Injection. EPSS 0.74%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Synology DSM security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 22, 2017 · Monitored products — high

    Detected

    An improper access control vulnerability in synodsmnotify in Synology DiskStation Manager (DSM) before 6.1.4-15217 and before 6.0.3-8754-6 allows local users to inject arbitrary web script or HTML via the -fn option.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    An improper access control vulnerability in synodsmnotify in Synology DiskStation Manager (DSM) before 6.1.4-15217 and before 6.0.3-8754-6 allows local users to inject arbitrary web script or HTML via the -fn option.

Sources

  • CVE.orgVulnerability recordCVE-2017-16766

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2017-16766

    An improper access control vulnerability in synodsmnotify in Synology DiskStation Manager (DSM) before 6.1.4-15217 and before 6.0.3-8754-6 allows local users to inject arbitrary web script or HTML via the -fn option.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 9, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 6, 2026
  • Monitored products — highNov 6, 2026