Review reviewHigh

CVE-2023-34552

cs-c6n-a0-1c2wfr-mul_firmware, cs-c6n-r101-1g2wf_firmware

In certain EZVIZ products, two stack based buffer overflows in mulicast_parse_sadp_packet and mulicast_get_pack_type functions of the SADP multicast protocol can allow an unauthenticated attacker present on the same local network as the camera to achieve remote code execution. This affects CS-C6N-B0-1G2WF Firmware versions before V5.3.0 build 230215 and CS-C6N-R101-1G2WF Firmware versions before V5.3.0 build 230215 and CS-CV310-A0-1B2WFR Firmware versions before V5.3.0 build 230221 and CS-CV310-A0-1C2WFR-C Firmware versions before V5.3.2 build 230221 and CS-C6N-A0-1C2WFR-MUL Firmware versio...

CVSS: 8.8
EPSS: 0.44%
CISA KEV: Not listed
Published: 2023.08.02

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.44%

Technical severityCVSS 8.8

Vulnerability overview

Affected product and versions

Product: cs-c6n-a0-1c2wfr-mul_firmware, cs-c6n-r101-1g2wf_firmware
Affected versions: <= 5.3.0, <= 5.3.2, <= 5.2.7, <= 5.2.3, <= 5.3.4
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that cs-c6n-a0-1c2wfr-mul_firmware, cs-c6n-r101-1g2wf_firmware and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-121, CWE-787