CVE-2025-62842
7.8 · HIGHOverview
CVE-2025-62842 is a high-severity vulnerability affecting qnap hybrid_backup_sync. It was published on January 2, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
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
Remediation
Check the references section for vendor advisories and patches from qnap. Update hybrid_backup_sync to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| qnap | hybrid_backup_sync | >= 0, < 26.2.0.938 | Affected |
Frequently Asked Questions
What is CVE-2025-62842?
CVE-2025-62842 is a high-severity vulnerability affecting qnap hybrid_backup_sync. It was published on January 2, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).
How severe is CVE-2025-62842?
This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-62842?
Check the references section for vendor advisories and patches from qnap. Update hybrid_backup_sync to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-62842?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-62842 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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