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CVE-2025-62839— Hard-coded Cryptographic Key #1

Quick assessment

Affected
QNAP Systems Inc. HBS 3 Hybrid Backup Sync
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

已报告 HBS 3 Hybrid Backup Sync 和 Hybrid Backup Sync 存在硬编码加密密钥漏洞。若被利用，该漏洞可能使远程攻击者破坏系统安全性。 我们已在以下版本中修复此漏洞： HBS 3 Hybrid Backup Sync 26.4.0.521 及更高版本 Hybrid Backup Sync 26.4.0.521 及更高版本 Hybrid Backup Sync 26.4.1.563 及更高版本

CVSS 8.7 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-62839

Vulnerability Information
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Vulnerability Title
Hard-coded Cryptographic Key #1
Source: CVE Program / CVE List V5
Vulnerability Description
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
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
QNAP Systems Inc. HBS 3 Hybrid Backup Sync 26.4.x ~ 26.4.0.521 -
QNAP Systems Inc. Hybrid Backup Sync 26.4.x ~ 26.4.0.521 -

II. Public POCs for CVE-2025-62839

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III. Intelligence Information for CVE-2025-62839

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Other References for CVE-2025-62839 (2)

IV. Related Vulnerabilities

Same product: HBS 3 Hybrid Backup Sync
Same vendor: QNAP Systems Inc.
Same weakness: CWE-321