CVE-2023-34551 Memory corruption in n/a

High 8.0 Published 1 Aug 2023 Updated 9 Jul 2026

An authenticated local network attacker can achieve remote code execution via stack buffer overflows in EZVIZ camera firmware.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-34551?

CVE-2023-34551 is a high-severity memory corruption vulnerability in n/a, published on 1 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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).

Weakness: CWE-787

Which versions are affected by CVE-2023-34551?

It affects 9 products.

Products include Ezviz Cs-C6n-A0-1c2wfr-Mul Firmware, Ezviz Cs-C6n-B0-1g2wf Firmware, Ezviz Cs-C6n-R101-1g2wf Firmware, Ezviz Cs-Cv248-A0-32wmfr Firmware, Ezviz Cs-Cv310-A0-1b2wfr Firmware, Ezviz Cs-Cv310-A0-1c2wfr-C Firmware and 3 more.

How do I fix CVE-2023-34551?

No fix has been published for CVE-2023-34551 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-34551 being exploited?

There is no known exploitation of CVE-2023-34551 in the wild and no public exploit code.

CVE-2023-34552 Memory corruption in n/a Medium 4.0

Sources

Also known as GHSA-xg9r-w6fx-9996.