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Vulnerabilities

Vulnerability · CVE-2025-62842

An external control of file name or path vulnerability has been reported to affect HBS 3 Hybrid Backup Sync.

Published Jan 2, 2026 · catalog updated Jan 5, 2026 · QNAP Systems Inc. HBS 3 Hybrid Backup Sync

Last checked Oct 31, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-62842. EPSS is 0.27%. Act only if a listed version of QNAP Systems Inc. HBS 3 Hybrid Backup Sync is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.27%
Remediation
Version ranges on file
Affected products
vendor QNAP Systems Inc. HBS 3 Hybrid Backup Sync 26.1.x <26.2.0.938

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor QNAP Systems Inc. HBS 3 Hybrid Backup Sync 26.1.x <26.2.0.93826.1.x <26.2.0.938

How to fix CVE-2025-62842

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-62842. EPSS is 0.27%. Act only if a listed version of QNAP Systems Inc. HBS 3 Hybrid Backup Sync is installed.

Which versions are affected?

Compare what you have installed with QNAP Systems Inc. HBS 3 Hybrid Backup Sync 26.1.x <26.2.0.938 26.1.x <26.2.0.938. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.27%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

QNAP QTS security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 2, 2026 · EUVD

    Detected

    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

  2. Jan 5, 2026 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-62842

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-62842

    30-day exploitation probability 0.27%

    first.org
  • EUVDVulnerability recordEUVD-2026-0662

    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 f

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 31, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 31, 2026
  • CVE.orgOct 31, 2026
  • EUVDOct 31, 2026