What’s Vulnerable › Vulnerabilities

CVE-2017-16775

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-04-01 · updated 2026-06-17
• Weakness: CWE-1021

Description

Improper restriction of rendered UI layers or frames vulnerability in SSOOauth.cgi in Synology SSO Server before 2.1.3-0129 allows remote attackers to conduct clickjacking attacks via unspecified vectors.

Affected products

• Synology SSO Server: before 2.1.3-0129 — fixed in 2.1.3-0129

How to fix

Upgrade to a fixed version: Synology SSO Server 2.1.3-0129. Check the vendor advisory for mitigations.

References

• https://www.synology.com/security/advisory/Synology_SA_18_28
• https://www.synology.com/security/advisory/Synology_SA_18_28

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