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TI-2022-21482 Aliases CVE-2022-43748GHSA-86gc-h854-7wv3

Path traversal in Synology Presto File Server

Priority MEDIUM 40CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

Improper limitation of a pathname to a restricted directory ('Path Traversal') vulnerability in file operation management in Synology Presto File Server before 2.1.2-1601 allows remote attackers to write arbitrary files via unspecified vectors.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00848 58th percentileScored 2026-11-07
Fix Fixed Presto File Server (Synology): 2.1.2-1601

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SynologyPresto File Serverbefore 2.1.2-16012.1.2-1601Patch availableCNA
  • Presto File Server VendorSynology Affected before 2.1.2-1601 Fixed in 2.1.2-1601 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:synology:presto_file_server:*:*:*:*:*:*:*:*before 2.1.2-1601VulnerableSynology
  • cpe:2.3:a:synology:presto_file_server:*:*:*:*:*:*:*:* Versions before 2.1.2-1601 Vulnerable ·Synology

Remediation

  • Fix · CNA Presto File Server (Synology) Fixed in 2.1.2-1601

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Synology Presto File Server 2.1.2-1601

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2022-21483 Improper privilege management in Synology Presto File ServerPriority LOW 39
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-43748
  2. 2026-10-03 Alias added: GHSA-86gc-h854-7wv3

References

Advisory 1

  • TI-2022-21483 Improper privilege management in Synology Presto File Server CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences