title: QTS, QuTS hero, QuTScloud
description: An improper authentication vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to compromise the security of the system via a network.
We have already fixed the vulnerability in the following versions:
QTS 5.1.3.2578 build 20231110 and later
QTS 4.5.4.2627 build 20231225 and later
QuTS hero h5.1.3.2578 build 20231110 and later
QuTS hero h4.5.4.2626 build 20231225 and later
QuTScloud c5.1.5.2651 and later
problem types: CWE-287
affected:
{
defaultStatus: unaffected
product: QTS
vendor: QNAP Systems Inc.
versions:
lessThan: 5.1.3.2578 build 20231110, status: affected, version: 5.1.x, versionType: custom
lessThan: 4.5.4.2627 build 20231225, status: affected, version: 4.5.x, versionType: custom
}
{
defaultStatus: unaffected
product: QuTS hero
vendor: QNAP Systems Inc.
versions:
lessThan: h5.1.3.2578 build 20231110, status: affected, version: h5.1.x, versionType: custom
lessThan: h4.5.4.2626 build 20231225, status: affected, version: h4.5.x, versionType: custom
}
{
defaultStatus: unaffected
product: QuTScloud
vendor: QNAP Systems Inc.
versions:
lessThan: c5.1.5.2651, status: affected, version: c5.x.x, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.8
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL
solutions: We have already fixed the vulnerability in the following versions:
QTS 5.1.3.2578 build 20231110 and later
QTS 4.5.4.2627 build 20231225 and later
QuTS hero h5.1.3.2578 build 20231110 and later
QuTS hero h4.5.4.2626 build 20231225 and later
QuTScloud c5.1.5.2651 and later
