title: Stack Based Overflow Vulnerability in NVR Storage Expansion
description: A stack buffer overflow vulnerability has been reported to affect QNAP device running NVR Storage Expansion. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of NVR Storage Expansion: NVR Storage Expansion 1.0.6 ( 2021/08/03 ) and later
problem types: CWE-787 Out-of-bounds Write
affected:
{
product: NVR Storage Expansion
vendor: QNAP Systems Inc.
versions:
lessThan: 1.0.6 ( 2021/08/03 ), status: affected, version: unspecified, 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
]
solutions: We have already fixed this vulnerability in the following versions of NVR Storage Expansion:
NVR Storage Expansion 1.0.6 ( 2021/08/03 ) and later