CVE-2021-47960 Information disclosure in Synology SSL VPN Client
Remote attackers can retrieve sensitive files from the installation directory via a local HTTP server and user interaction, leading to information disclosure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-47960?
CVE-2021-47960 is a medium-severity vulnerability in Synology SSL VPN Client, published on 10 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-552
Which versions are affected by CVE-2021-47960?
It affects 1 product.
Products include Synology Ssl Vpn Client.
How do I fix CVE-2021-47960?
No fix has been published for CVE-2021-47960 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-47960 being exploited?
There is no known exploitation of CVE-2021-47960 in the wild and no public exploit code.
Other vulnerabilities in Synology SSL VPN Client
Sources
Also known as GHSA-frr3-hpw2-j7cq.