CVE-2025-29843

Medium

Published: 04 December 2025

Published

04 December 2025

Modified

05 December 2025

KEV Added

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Patch

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CVSS Score v3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS Score 0.0029 52.9th percentile

Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-29843 is a medium-severity Path Traversal (CWE-22) vulnerability in Synology Router Manager. Its CVSS base score is 5.4 (Medium).

Operationally, ranked in the top 47.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

A vulnerability in FileStation thumb cgi allows remote authenticated users to read/write image files.

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

synology

router manager

1.3.1-9346 · 1.3 — 1.3.1-9346

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-22

Validates pathnames and filenames to prevent traversal outside intended directories.