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Syncplify Server! < 8.8.0 Permission Override Bypass via Path Casing

Priority MEDIUM 40CWE-41Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Syncplify Server! before 8.8.0 contains an access control bypass vulnerability that allows authenticated SFTP users to evade per-path permission overrides by exploiting case-insensitive filesystem path resolution and 8.3 short names. Attackers can address a protected directory using alternate capitalization or its 8.3 short name to perform file uploads and downloads that the configured override is intended to deny, resulting in unauthorized file access.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00472 41st percentileScored 2026-11-07
Fix Fixed Syncplify Server! (Syncplify, Inc.): 8.8.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
Syncplify, Inc.Syncplify Server!before 8.8.08.8.0Patch availableCNA
  • Syncplify Server! VendorSyncplify, Inc. Affected before 8.8.0 Fixed in 8.8.0 Patch available CNA

Remediation

  • Fix · CNA Syncplify Server! (Syncplify, Inc.) Fixed in 8.8.0

Fixed in the same release

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

  • Release ·

    Syncplify Server! 8.8.0

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-80470 Path traversal in Syncplify Server lets users escape the home folder jailPriority LOW 35

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-112343
  2. 2026-10-27 Alias added: GHSA-8xjp-7jq6-2fc2
  3. 2026-10-27 Priority changed: MEDIUM → LOW
  4. 2026-10-31 CISA SSVC decision points changed
  5. 2026-10-31 Priority changed: LOW → MEDIUM

References

  • TI-2020-19365 Syncplify.me Server! 5.0.37 Unquoted Service Path Privilege Escalation CVSS 4.0HIGH 8.5
  • TI-2026-80470 Path traversal in Syncplify Server lets users escape the home folder jail CVSS 4.0HIGH 7.6
  • TI-2026-81010 Cleartext FTP data transfers in ftpserverlib expose file contents CVSS 4.0MEDIUM 6.3

Sources