title: Stack-Based Buffer Overflow Vulnerability in the EZVIZ Motion Detection component
description: Stack-based Buffer Overflow vulnerability in the EZVIZ Motion Detection component as used in camera models CS-CV248, CS-C6N-A0-1C2WFR, CS-DB1C-A0-1E2W2FR, CS-C6N-B0-1G2WF, CS-C3W-A0-3H4WFRL allows a remote attacker to execute remote code on the device. This issue affects: EZVIZ CS-CV248 versions prior to 5.2.3 build 220725. EZVIZ CS-C6N-A0-1C2WFR versions prior to 5.3.0 build 220428. EZVIZ CS-DB1C-A0-1E2W2FR versions prior to 5.3.0 build 220802. EZVIZ CS-C6N-B0-1G2WF versions prior to 5.3.0 build 220712. EZVIZ CS-C3W-A0-3H4WFRL versions prior to 5.3.5 build 220723.
problem types: CWE-121 Stack-based Buffer Overflow
affected:
{
product: CS-CV248
vendor: EZVIZ
versions:
lessThan: 5.2.3 build 220725, status: affected, version: unspecified, versionType: custom
}
{
product: CS-C6N-A0-1C2WFR
vendor: EZVIZ
versions:
lessThan: 5.3.0 build 220428, status: affected, version: unspecified, versionType: custom
}
{
product: CS-DB1C-A0-1E2W2FR
vendor: EZVIZ
versions:
lessThan: 5.3.0 build 220802, status: affected, version: unspecified, versionType: custom
}
{
product: CS-C6N-B0-1G2WF
vendor: EZVIZ
versions:
lessThan: 5.3.0 build 220712, status: affected, version: unspecified, versionType: custom
}
{
product: CS-C3W-A0-3H4WFRL
vendor: EZVIZ
versions:
lessThan: 5.3.5 build 220723, status: affected, version: unspecified, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 9.9
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
version: 3.1
]
solutions: Firmware versions for each product model that fixes the vulnerability are available below:
EZVIZ CS-CV248 version 5.2.3 build 220725 and newer.
EZVIZ CS-C6N-A0-1C2WFR version 5.3.0 build 220428 and newer.
EZVIZ CS-DB1C-A0-1E2W2FR version 5.3.0 build 220802 and newer.
EZVIZ CS-C6N-B0-1G2WF version 5.3.0 build 220712 and newer.
EZVIZ CS-C3W-A0-3H4WFRL version 5.3.5 build 220723 and newer.