CVE-2023-34551

What it is

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).

At a glance

Exploitability

Can be exploited from the same network segment with a low-privilege account. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-08-01 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-07-09 01:18 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.5% in the next 30 days (EPSS).
• Severity: 8.0 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-08-01 18:15 UTC

Last modified

2026-07-09 01:18 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-787 · Out-of-bounds write

Record status

Modified

Affected

• Ezviz cs-c6n-b0-1g2wf Firmware ≤ 5.3.0
• Ezviz cs-c6n-r101-1g2wf Firmware ≤ 5.3.0
• Ezviz cs-cv310-a0-1b2wfr Firmware ≤ 5.3.0
• Ezviz cs-cv310-a0-1c2wfr-c Firmware ≤ 5.3.2
• Ezviz cs-c6n-a0-1c2wfr-mul Firmware ≤ 5.3.2
• Ezviz cs-cv310-a0-3c2wfrl-1080p Firmware ≤ 5.2.7
• Ezviz cs-cv310-a0-1c2wfr Firmware ≤ 5.3.2
• Ezviz cs-cv248-a0-32wmfr Firmware ≤ 5.2.3

Attack profile CVSS 3.1 · 8.0

Attack vector

Adjacent network

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-34551.md and follow it. Check whether this project is affected by CVE-2023-34551. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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