Syncplify Server! < 8.8.0 Permission Override Bypass via Path Casing
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
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Syncplify, Inc. | Syncplify Server! | before 8.8.0 | 8.8.0 | Patch available | CNA |
- 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
- 2026-10-26 Threatist record created from CVE-2026-112343
- 2026-10-27 Alias added: GHSA-8xjp-7jq6-2fc2
- 2026-10-27 Priority changed: MEDIUM → LOW
- 2026-10-31 CISA SSVC decision points changed
- 2026-10-31 Priority changed: LOW → MEDIUM
References
Patch 1
More Syncplify, Inc. vulnerabilities
- 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
- CVE-2026-112343 · CVE Program
- CVE-2026-112343 · NVD
- FIRST EPSS
- GHSA-8xjp-7jq6-2fc2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences