What is CVE-2024-53695?

CVE-2024-53695 is a critical-severity vulnerability in Qnap Hybrid_backup_sync, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.1/10. Published 2025-03-07.

How severe is CVE-2024-53695?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Buffer overflow in Qnap Hybrid_backup_sync

CVE-2024-53695

A buffer overflow vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to modify memory or crash processes. We have already fixed the vulnerability in the followi…

Vulnerability class: Buffer Overflow

EPSS: 0.005 (38.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Qnap Hybrid_backup_sync
Qnap Systems Inc. Hbs 3 Hybrid Backup Sync — versions 25.1.x

Weakness classification (CWE)

References

security@qnapsecurity.com.tw (Vendor Advisory)

Frequently asked questions

What is CVE-2024-53695?: CVE-2024-53695 is a critical-severity vulnerability in Qnap Hybrid_backup_sync, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.1/10. Published 2025-03-07.
How severe is CVE-2024-53695?: Critical severity. CVSS v3 base score is 9.1 out of 10.