CVE-2025-62839：QNAP Hybrid Backup Sync 發現硬編碼加密金鑰漏洞，已於 26.4.0.521 版修補
CVE-2025-62839 - Hard-coded Cryptographic Key #1
**QNAP 的 Hybrid Backup Sync 系統發現一個硬編碼加密金鑰漏洞（CVE‑2025‑62839），可被遠端攻擊者利用。
- 漏洞影響**：可讓遠端攻擊者突破系統安全，可能導致資料外洩。
此漏洞可被遠端利用，已在新版 26.4.0.521 以後修補，使用者應即時升級以保障系統安全，避免資料外洩風險，確保業務連續性。
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
Impact
Affected Products
The following products are affected by CVE-2025-62839
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
| ID | Vendor | Product | Action |
|---|---|---|---|
| 1 | Qnap | hybrid_backup_sync |
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | 2fd009eb-170a-4625-932b-17a53af1051f |
Update to the latest version to fix hard-coded cryptographic keys and protect the system.
- Update HBS 3 Hybrid Backup Sync to version 26.4.0.521 or later.
- Update Hybrid Backup Sync to version 26.4.0.521 or later.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-62839 vulnerability anywhere in the article.
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.