What’s Vulnerable › Vulnerabilities

CVE-2024-39347

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-06-28 · updated 2026-06-17
• Weakness: CWE-276

Description

Incorrect default permissions vulnerability in firewall functionality in Synology Router Manager (SRM) before 1.2.5-8227-11 and 1.3.1-9346-8 allows man-in-the-middle attackers to access highly sensitive intranet resources via unspecified vectors.

Affected products

• Synology Router Manager (SRM): from 1.2 before 1.2.5-8227; from 1.3 before 1.3.1-9346; 1.2.5-8227, 1.2.5-8227-update1, 1.2.5-8227-update10, 1.2.5-8227-update2, 1.2.5-8227-update3, 1.2.5-8227-update4 (+13) — fixed in 1.2.5-8227, 1.3.1-9346

How to fix

Upgrade to a fixed version: Synology Router Manager (SRM) 1.2.5-8227, 1.3.1-9346. Check the vendor advisory for mitigations.

References

• https://www.synology.com/en-global/security/advisory/Synology_SA_23_16
• https://www.synology.com/en-global/security/advisory/Synology_SA_23_16

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