CVE-2024-39347

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.

Published: 2024-06-28 Last update: 2025-08-07 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-39347 is rated Moderate Risk (44.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.39%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-39347

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.15% 0.39% +0.24%
2 2025-11-18 0.39% 0.15% -0.24%
3 2025-11-17 — 0.39% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-39347

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]

Weakness enumeration for CVE-2024-39347

Affected software / configurations for CVE-2024-39347

Vendor Product Version Raw CPE
synology router_manager >= 1.2, < 1.2.5-8227 cpe:2.3:o:synology:router_manager:*:*:*:*:*:*:*:*
synology router_manager >= 1.3, < 1.3.1-9346 cpe:2.3:o:synology:router_manager:*:*:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:-:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update1:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update10:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update2:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update3:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update4:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update5:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update6:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update7:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update8:*:*:*:*:*:*
synology router_manager 1.2.5-8227 cpe:2.3:o:synology:router_manager:1.2.5-8227:update9:*:*:*:*:*:*
synology router_manager 1.3.1-9346 cpe:2.3:o:synology:router_manager:1.3.1-9346:-:*:*:*:*:*:*
synology router_manager 1.3.1-9346 cpe:2.3:o:synology:router_manager:1.3.1-9346:update1:*:*:*:*:*:*
synology router_manager 1.3.1-9346 cpe:2.3:o:synology:router_manager:1.3.1-9346:update2:*:*:*:*:*:*
synology router_manager 1.3.1-9346 cpe:2.3:o:synology:router_manager:1.3.1-9346:update3:*:*:*:*:*:*
synology router_manager 1.3.1-9346 cpe:2.3:o:synology:router_manager:1.3.1-9346:update4:*:*:*:*:*:*
synology router_manager 1.3.1-9346 cpe:2.3:o:synology:router_manager:1.3.1-9346:update5:*:*:*:*:*:*
synology router_manager 1.3.1-9346 cpe:2.3:o:synology:router_manager:1.3.1-9346:update6:*:*:*:*:*:*
synology router_manager 1.3.1-9346 cpe:2.3:o:synology:router_manager:1.3.1-9346:update7:*:*:*:*:*:*

References for CVE-2024-39347

cvelogic Threat Intelligence