What is CVE-2025-62840?

CVE-2025-62840 is a low-severity vulnerability in Qnap Hybrid_backup_sync, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 3.3/10. Published 2026-01-02.

How severe is CVE-2025-62840?

Low severity. CVSS v3 base score is 3.3 out of 10.

Information disclosure in Qnap Hybrid_backup_sync

CVE-2025-62840

A generation of error message containing sensitive information 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 application data…

EPSS: 0.002 (10.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Qnap Hybrid_backup_sync
Qnap Systems Inc. Hbs 3 Hybrid Backup Sync — versions 26.1.x

Weakness classification (CWE)

CWE-209 — Generation of Error Message Containing Sensitive Information

References

security@qnapsecurity.com.tw (Vendor Advisory)

Frequently asked questions

What is CVE-2025-62840?: CVE-2025-62840 is a low-severity vulnerability in Qnap Hybrid_backup_sync, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 3.3/10. Published 2026-01-02.
How severe is CVE-2025-62840?: Low severity. CVSS v3 base score is 3.3 out of 10.