CVE-2025-62840: CWE-209 in QNAP Systems Inc. HBS 3 Hybrid Backup Sync
CVE-2025-62840 is a vulnerability in QNAP Systems Inc. 's HBS 3 Hybrid Backup Sync version 26.1.x that causes error messages to disclose sensitive information. An attacker with local network access could exploit this flaw to read application data. The issue has been fixed in version 26.2.0.938 and later. The vulnerability has a high severity rating with a CVSS score of 7.
AI Analysis
Technical Summary
This vulnerability (CWE-209) involves the generation of error messages that contain sensitive information in HBS 3 Hybrid Backup Sync. If an attacker gains access to the local network, they can exploit this flaw to read application data by triggering these error messages. The vulnerability affects version 26.1.x and was addressed in version 26.2.0.938 and later.
Potential Impact
The vulnerability allows an attacker with local network access to obtain sensitive application data through error message disclosure. This could lead to unauthorized information disclosure but does not indicate remote exploitation or privilege escalation. No known active exploitation has been reported.
Mitigation Recommendations
Upgrade HBS 3 Hybrid Backup Sync to version 26.2.0.938 or later, where this vulnerability has been fixed. Since this is not a cloud service, remediation depends on applying the official patch provided by QNAP.
CVE-2025-62840: CWE-209 in QNAP Systems Inc. HBS 3 Hybrid Backup Sync
Description
CVE-2025-62840 is a vulnerability in QNAP Systems Inc. 's HBS 3 Hybrid Backup Sync version 26.1.x that causes error messages to disclose sensitive information. An attacker with local network access could exploit this flaw to read application data. The issue has been fixed in version 26.2.0.938 and later. The vulnerability has a high severity rating with a CVSS score of 7.
CVSS v4.0
Score 7.0high
Affected software
QNAP Systems Inc.
HBS 3 Hybrid Backup Sync
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-209) involves the generation of error messages that contain sensitive information in HBS 3 Hybrid Backup Sync. If an attacker gains access to the local network, they can exploit this flaw to read application data by triggering these error messages. The vulnerability affects version 26.1.x and was addressed in version 26.2.0.938 and later.
Potential Impact
The vulnerability allows an attacker with local network access to obtain sensitive application data through error message disclosure. This could lead to unauthorized information disclosure but does not indicate remote exploitation or privilege escalation. No known active exploitation has been reported.
Mitigation Recommendations
Upgrade HBS 3 Hybrid Backup Sync to version 26.2.0.938 or later, where this vulnerability has been fixed. Since this is not a cloud service, remediation depends on applying the official patch provided by QNAP.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- qnap
- Date Reserved
- 2025-10-24T02:43:45.372Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6957eb35db813ff03ef35598
Added to database: 01/02/2026, 15:58:45 UTC
Last enriched: 05/26/2026, 20:15:15 UTC
Last updated: 09/10/2026, 22:30:57 UTC
Views: 197
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