Path traversal in QNAP Qsync Central
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.1 ( 2025/07/09 ) and later
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Qsync Central (QNAP Systems Inc.) Fixed in 5.0.0.1 ( 2025/07/09 )
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
QNAP Systems Qsync Central 5.0.0.1 ( 2025/07/09 )
10 records Highest priority Priority LOW 10 LOW
Other records, highest priority first
- TI-2025-28563 Out-of-bounds write in QNAP Qsync CentralPriority LOW 32
- TI-2025-28556 Resource allocation without limits in QNAP Qsync CentralPriority LOW 31
- TI-2025-28555 Resource allocation without limits in QNAP Qsync CentralPriority LOW 31
Timeline
- 2026-10-02 Threatist record created from CVE-2025-33034
- 2026-10-03 Alias added: GHSA-m5h8-cchv-fjgv
References
More QNAP Qsync Central vulnerabilities
- TI-2025-33996 SQL injection in QNAP Qsync Central CVSS 4.0HIGH 8.6
- TI-2025-33532 SQL injection in QNAP Qsync Central CVSS 4.0HIGH 8.6
- TI-2025-21280 SQL injection in QNAP Qsync Central CVSS 4.0HIGH 8.7
- TI-2023-25732 Incorrect permission assignment in QNAP Qsync Central CVSS 3.1HIGH 8.1
- TI-2025-21597 Improper certificate validation in QNAP Qsync Central CVSS 4.0HIGH 8.3
- TI-2025-21596 Improper certificate validation in QNAP Qsync Central CVSS 4.0HIGH 8.3
Sources
- CVE-2025-33034 · CVE Program
- CVE-2025-33034 · NVD
- FIRST EPSS
- GHSA-m5h8-cchv-fjgv · GitHub Advisory Database · CC BY 4.0
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