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CVE-2025-62839

Hard-coded Cryptographic Key #1

An use of hard-coded cryptographic key vulnerability has been reported to affect HBS 3 Hybrid Backup Sync and Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to compromise the security of the system. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.4.0.521 and later Hybrid Backup Sync 26.4.0.521 and later Hybrid Backup Sync 26.4.1.563 and later

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Qnap Qnap Systems Qnap Systems Inc.
Products
Hybrid Backup Sync Hbs 3 Hybrid Backup Sync Hbs 3 Hybrid Backup Sync
CVE-2025-62841

Hard-coded Cryptographic Key #2

An use of hard-coded cryptographic key vulnerability has been reported to affect HBS 3 Hybrid Backup Sync and Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to compromise the security of the system. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.4.0.521 and later Hybrid Backup Sync 26.4.0.521 and later Hybrid Backup Sync 26.4.1.563 and later

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Qnap Qnap Systems Qnap Systems Inc.
Products
Hybrid Backup Sync Hbs 3 Hybrid Backup Sync Hbs 3 Hybrid Backup Sync
CVE-2025-62840

HBS 3 Hybrid Backup Sync

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. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.2.0.938 and later

CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Vendors
Qnap Qnap Systems Inc.
Products
Hybrid Backup Sync Hbs 3 Hybrid Backup Sync
CVE-2025-62842

HBS 3 Hybrid Backup Sync

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

CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Vendors
Qnap Qnap Systems Inc.
Products
Hybrid Backup Sync Hbs 3 Hybrid Backup Sync
CVE-2024-50388

HBS 3 Hybrid Backup Sync

An OS command injection vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to execute commands. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 25.1.1.673 and later

CVSS 4.0 · 9.5 Critical EPSS 2.3% KEV · Not listed
Vendors
Qnap
Products
Hbs 3 Hybrid Backup Sync
CVE-2024-53695

HBS 3 Hybrid Backup Sync

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 following version: HBS 3 Hybrid Backup Sync 25.1.4.952 and later

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Qnap
Products
Hybrid Backup Sync
CVE-2021-28799

Improper Authorization Vulnerability in HBS 3 (Hybrid Backup Sync)

An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If exploited, the vulnerability allows remote attackers to log in to a device. This issue affects: QNAP Systems Inc. HBS 3 versions prior to v16.0.0415 on QTS 4.5.2; versions prior to v3.0.210412 on QTS 4.3.6; versions prior to v3.0.210411 on QTS 4.3.4; versions prior to v3.0.210411 on QTS 4.3.3; versions prior to v16.0.0419 on QuTS hero h4.5.1; versions prior to v16.0.0419 on QuTScloud c4.5.1~c4.5.4. This issue does not affect: QNAP Systems Inc. HBS 2 . QNAP Systems Inc. HBS 1.3 .

CVSS 3.1 · 10 Critical EPSS 78.2% KEV · Listed
Vendors
Qnap
Products
Hybrid Backup Sync Qts Quts Hero and 1 more
CVE-2021-28809

Missing Authentication for Critical Function in RTRR Server in HBS3

An improper access control vulnerability has been reported to affect certain legacy versions of HBS 3. If exploited, this vulnerability allows attackers to compromise the security of the operating system.QNAP have already fixed this vulnerability in the following versions of HBS 3: QTS 4.3.6: HBS 3 v3.0.210507 and later QTS 4.3.4: HBS 3 v3.0.210506 and later QTS 4.3.3: HBS 3 v3.0.210506 and later

CVSS 3.1 · 9.8 Critical EPSS 16.1% KEV · Not listed
Vendors
Qnap
Products
Hybrid Backup Sync Qts