CVE-2021-47961

HIGH

Synology SSL VPN Client <1.4.5-0684 - Info Disclosure

Title source: llm
STIX 2.1

Description

A plaintext storage of a password vulnerability in Synology SSL VPN Client before 1.4.5-0684 allows remote attackers to access or influence the user's PIN code due to insecure storage. This may lead to unauthorized VPN configuration and potential interception of subsequent VPN traffic when combined with user interaction.

References (1)

Scores

CVSS v3 8.1
EPSS 0.0004
EPSS Percentile 13.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-256
Status published
Products (1)
Synology/Synology SSL VPN Client < 1.4.5-0684
Published Apr 10, 2026
Tracked Since Apr 10, 2026