Improper restriction of communication channel to intended endpoints vulnerability in HTTP daemon in Synology SSL VPN Client before 1.2.4-02…

Published 8 y ago 2018-07-06 · modified 4 mo ago 2026-06-17 · JSON

CVSS

7.3

v3.0 · CNA

CISA KEV

not known exploited

EPSS

0.8%

percentile 55%

Public exploits

none known

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.

Exploit prediction (EPSS)

0.75% probability of exploitation in the next 30 days, higher than 55% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
CNA	3.0	7.3	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`
CNA	3.0	7.3	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`
NVD	3.0	8.1	`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`
NVD	2.0	6.8	`AV:N/AC:M/Au:N/C:P/I:P/A:P`

Affected products

Synology SSL VPN Client

Classification

Weakness

CWE-319 Cleartext Transmission of Sensitive Information
CWE-417 Communication Channel Errors

References

synology.com /en-global/support/security/Synology_SA_18_19 · x_refsource_CONFIRM, x_transferred

Sources

CVE List: CVE-2018-8929
NVD: CVE-2018-8929

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