QNAP Systems, Inc. HBS 3 (Hybrid Backup Sync)

Name: QNAP Systems, Inc. HBS 3 (Hybrid Backup Sync)
Brand: QNAP Systems, Inc.

productRU

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

public exploit

by severity

3critical0high0medium1low

updated 2026-10-28

vulnerabilities (4)

Related CVEs.

sort

ID	severity	EPSS	exploitable	patched	published	affected
CVE-2021-28799US	critical9.8OT critical	78.3% (100th)	KEV	no fix	2021-05-13	4 versions
CVE-2021-28809US	critical9.8OT high	16.1% (97th)	—	no fix	2021-07-08	2 versions
CVE-2024-50388US	critical9.8	2.30% (83rd)	—	no fix	2024-12-06	≤ 25.1.1.673
CVE-2025-62840US	low3.3	0.24% (15th)	—	no fix	2026-01-02	≤ 26.2.0.938

The flaw types (CWEs) most of these CVEs share.

CWE-209Generation of Error Message Containing Sensitive Information1 CVEs
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')1 CVEs
CWE-284Improper Access Control1 CVEs
CWE-285Improper Authorization1 CVEs
CWE-306Missing Authentication for Critical Function1 CVEs
CWE-749Exposed Dangerous Method or Function1 CVEs
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')1 CVEs
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')1 CVEs

Which sources assert this record, and when.

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