CVE-2021-47960: Medium severity Synology Synology SSL VPN Client vulnerability

Published Apr 10, 2026
·
Updated

A files or directories accessible to external parties vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access files within the installation directory via a local HTTP server bound to the loopback interface. By leveraging user interaction with a crafted web page, attackers may retrieve sensitive files such as configuration files, certificates, and logs, leading to information disclosure.

Affected Software

2 affected components
Synology Synology SSL VPN Client<1.4.5-0684
Synology SSL VPN Client<1.4.5-0684

Event History

Apr 10, 2026
CVE Published
via MITRE·09:21 AM
Data Sourced
via MITRE·09:21 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 AM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-47960?

CVE-2021-47960 has been classified as a high-severity vulnerability due to its potential to allow unauthorized access to sensitive files.

2

How do I fix CVE-2021-47960?

To mitigate CVE-2021-47960, update the Synology SSL VPN Client to version 1.4.5-0684 or later.

3

What type of vulnerability is CVE-2021-47960?

CVE-2021-47960 is a files or directories accessible to external parties vulnerability.

4

What can attackers do with CVE-2021-47960?

Attackers can access files within the installation directory of the Synology SSL VPN Client if users interact with a malicious web page.

5

Is my system affected by CVE-2021-47960?

If you are using Synology SSL VPN Client versions prior to 1.4.5-0684, your system is affected by CVE-2021-47960.

Contact

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