CVE-2023-34551

In certain EZVIZ products, two stack buffer overflows in netClientSetWlanCfg function of the EZVIZ SDK command server can allow an authenticated 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 versions before V5.3.2 build 230218 and CS-CV310-A0-3C2WFRL-1080p Firmware versions before V5.2.7 build 230302 and CS-CV310-A0-1C2WFR Wifi IP66 2.8mm 1080p Firmware versions before V5.3.2 build 230214 and CS-CV248-A0-32WMFR Firmware versions before V5.2.3 build 230217 and EZVIZ LC1C Firmware versions before V5.3.4 build 230214. The impact is: execute arbitrary code (remote).

Published: 2023-08-01 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-34551 is rated Moderate Risk (43.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.53%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-34551

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.64% 0.53% -3.10%
2 2026-05-28 3.23% 3.64% +0.40%
3 2026-04-26 — 3.23% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-34551

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.0 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.1 5.9 [email protected]

Weakness enumeration for CVE-2023-34551

Affected software / configurations for CVE-2023-34551

Vendor Product Version Raw CPE
ezviz cs-c6n-b0-1g2wf_firmware <= 5.3.0 cpe:2.3:o:ezviz:cs-c6n-b0-1g2wf_firmware:*:*:*:*:*:*:*:*
ezviz cs-c6n-r101-1g2wf_firmware <= 5.3.0 cpe:2.3:o:ezviz:cs-c6n-r101-1g2wf_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv310-a0-1b2wfr_firmware <= 5.3.0 cpe:2.3:o:ezviz:cs-cv310-a0-1b2wfr_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv310-a0-1c2wfr-c_firmware <= 5.3.2 cpe:2.3:o:ezviz:cs-cv310-a0-1c2wfr-c_firmware:*:*:*:*:*:*:*:*
ezviz cs-c6n-a0-1c2wfr-mul_firmware <= 5.3.2 cpe:2.3:o:ezviz:cs-c6n-a0-1c2wfr-mul_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv310-a0-3c2wfrl-1080p_firmware <= 5.2.7 cpe:2.3:o:ezviz:cs-cv310-a0-3c2wfrl-1080p_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv310-a0-1c2wfr_firmware <= 5.3.2 cpe:2.3:o:ezviz:cs-cv310-a0-1c2wfr_firmware:*:*:*:*:*:*:*:*
ezviz cs-cv248-a0-32wmfr_firmware <= 5.2.3 cpe:2.3:o:ezviz:cs-cv248-a0-32wmfr_firmware:*:*:*:*:*:*:*:*
ezviz lc1c_firmware <= 5.3.4 cpe:2.3:o:ezviz:lc1c_firmware:*:*:*:*:*:*:*:*

References for CVE-2023-34551

cvelogic Threat Intelligence