CVE-2024-53695

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 v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.qnap.com/en/security-advisory/qsa-25-06	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*

History

16 Jan 2026, 18:15

Type	Values Removed	Values Added
Summary		(es) Se ha informado de una vulnerabilidad de desbordamiento de búfer que afecta a HBS 3 Hybrid Backup Sync. Si se explota, la vulnerabilidad podría permitir a atacantes remotos modificar la memoria o bloquear procesos. Ya hemos corregido la vulnerabilidad en la siguiente versión: HBS 3 Hybrid Backup Sync 25.1.4.952 y posteriores
CPE		cpe:2.3:a:qnap:hybrid_backup_sync::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.1
References	~~() https://www.qnap.com/en/security-advisory/qsa-25-06 -~~	() https://www.qnap.com/en/security-advisory/qsa-25-06 - Vendor Advisory
First Time		Qnap hybrid Backup Sync Qnap

07 Mar 2025, 17:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-03-07 17:15

Updated : 2026-01-16 18:15

NVD link : CVE-2024-53695

Mitre link : CVE-2024-53695

CVE.ORG link : CVE-2024-53695

JSON object : View

Products Affected

qnap

hybrid_backup_sync

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-121

Stack-based Buffer Overflow

{"id": "CVE-2024-53695", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "security@qnapsecurity.com.tw", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2025-03-07T17:15:20.250", "references": [{"url": "https://www.qnap.com/en/security-advisory/qsa-25-06", "tags": ["Vendor Advisory"], "source": "security@qnapsecurity.com.tw"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security@qnapsecurity.com.tw", "description": [{"lang": "en", "value": "CWE-120"}, {"lang": "en", "value": "CWE-121"}]}], "descriptions": [{"lang": "en", "value": "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.\n\nWe have already fixed the vulnerability in the following version:\nHBS 3 Hybrid Backup Sync 25.1.4.952 and later"}, {"lang": "es", "value": "Se ha informado de una vulnerabilidad de desbordamiento de b\u00fafer que afecta a HBS 3 Hybrid Backup Sync. Si se explota, la vulnerabilidad podr\u00eda permitir a atacantes remotos modificar la memoria o bloquear procesos. Ya hemos corregido la vulnerabilidad en la siguiente versi\u00f3n: HBS 3 Hybrid Backup Sync 25.1.4.952 y posteriores"}], "lastModified": "2026-01-16T18:15:07.420", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4CD33AD5-AD3C-4527-A360-7E0F637BA6DE", "versionEndExcluding": "25.1.4.952", "versionStartIncluding": "25.1.0.627"}], "operator": "OR"}]}], "sourceIdentifier": "security@qnapsecurity.com.tw"}