What’s Vulnerable › Vulnerabilities

CVE-2018-8929

• Severity: high (CVSS 8.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-07-06 · updated 2026-06-17
• Weakness: CWE-319

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.

Affected products

• Synology SSL VPN Client: before 1.2.4-0224 — fixed in 1.2.4-0224

How to fix

Upgrade to a fixed version: Synology SSL VPN Client 1.2.4-0224. Check the vendor advisory for mitigations.

References

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

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