CVE-2018-8929 | BDVDB-2026-103613 Detail

SynologySSL VPN Client

Description#

Improper restriction of communication channel to intended endpoints vulnerability in HTTP daemon in Synology SSL VPN Client before 1.2.4-0224 allows remote attackers to conduct man-in-the-middle attacks via a crafted payload.

Impact#

Per CVSS v3.0: confidentiality impact low, integrity impact low, availability impact low. Attack vector: network.

Weaknesses#

CWE-319 Cleartext Transmission of Sensitive Information

References#

https://www.synology.com/en-global/support/security/Synology_SA_18_19

Exploit#

No public exploit known

History#

Version 12018-07-06Record published in the CVE List.
Version 22024-09-16Most recent update recorded in the CVE List.

Published

Published: 2018-07-06
Last modified: 2024-09-16

Vendor information

Vendor: Synology
Product: SSL VPN Client

All Synology vulnerabilities

Score

7.3 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 55.3.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 1.2.4-0224
Fixed
1.2.4-0224

Scoring System

CVSS v4.0

Not available

CVSS v3.1

Not available

CVSS v3.0

7.3 High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	Low
Integrity	Low
Availability	Low

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).