An external control of file name or path vulnerability has been reported to affect HBS 3…
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
An external control of file name or path vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If an attacker gains local network access, they can then exploit the vulnerability to read or modify files or directories. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.2.0.938 and later
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
Remediation
- Fix · CNA HBS 3 Hybrid Backup Sync (QNAP Systems Inc.) Fixed in 26.2.0.938
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
QNAP Systems HBS 3 Hybrid Backup Sync 26.2.0.938
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2025-38994 Information disclosure through error messages in QNAP HBS 3 Hybrid Backup SyncPriority LOW 32
Timeline
- 2026-10-02 Threatist record created from CVE-2025-62842
- 2026-10-03 Alias added: GHSA-mgp4-g6w6-2q2x
References
More QNAP Hybrid Backup Sync vulnerabilities
- TI-2021-09791 Improper Authorization Vulnerability in HBS 3 (Hybrid Backup Sync) KEVCVSS 3.1CRITICAL 10.0
- TI-2021-09800 Missing Authentication for Critical Function in RTRR Server in HBS3 CVSS 3.1CRITICAL 9.8
- TI-2024-33823 Command injection in QNAP HBS 3 Hybrid Backup Sync CVSS 4.0CRITICAL 9.5
- TI-2025-38994 Information disclosure through error messages in QNAP HBS 3 Hybrid Backup Sync CVSS 4.0HIGH 7.0
- TI-2024-35893 Buffer overflow in QNAP HBS 3 Hybrid Backup Sync CVSS 4.0MEDIUM 6.3
Sources
- CVE-2025-62842 · CVE Program
- CVE-2025-62842 · NVD
- FIRST EPSS
- GHSA-mgp4-g6w6-2q2x · GitHub Advisory Database · CC BY 4.0
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