CVE-2021-47960

MEDIUM

Synology SSL VPN Client < 1.4.5-0684 - Information Disclosure via Local HTTP Server

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory
Synology-SA-26:05 Synology SSL VPN Client
https://www.synology.com/en-global/security/advisory/Synology_SA_26_05

Scores

CVSS v3 6.5
EPSS 0.0003
EPSS Percentile 10.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-552
Status published
Products (1)
Synology/Synology SSL VPN Client < 1.4.5-0684
Published Apr 10, 2026
Tracked Since Apr 10, 2026