title: Relative Path Traversal Vulnerability in QTS and QuTS hero
description: A relative path traversal vulnerability has been reported to affect QNAP NAS running QTS and QuTS hero. If exploited, this vulnerability allows attackers to modify files that impact system integrity. QNAP have already fixed this vulnerability in the following versions: QTS 4.5.2.1630 Build 20210406 and later QTS 4.3.6.1663 Build 20210504 and later QTS 4.3.3.1624 Build 20210416 and later QuTS hero h4.5.2.1638 Build 20210414 and later QNAP NAS running QTS 4.5.3 are not affected.
problem types: CWE-284 Improper Access Control
affected:
{
product: QTS
vendor: QNAP Systems Inc.
versions:
lessThan: 4.5.2.1630 Build 20210406, status: affected, version: unspecified, versionType: custom
lessThan: 4.3.6.1663 Build 20210504, status: affected, version: unspecified, versionType: custom
lessThan: 4.3.3.1624 Build 20210416, status: affected, version: unspecified, versionType: custom
status: unaffected, version: 4.5.3
}
{
product: QuTS hero
vendor: QNAP Systems Inc.
versions:
lessThan: h4.5.2.1638 Build 20210414, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 8.8
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
solutions: QNAP have already fixed this vulnerability in the following versions:
QTS 4.5.2.1630 Build 20210406 and later
QTS 4.3.6.1663 Build 20210504 and later
QTS 4.3.3.1624 Build 20210416 and later
QuTS hero h4.5.2.1638 Build 20210414 and later