# CVE-2023-34551: Memory corruption in n/a

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

- **Severity:** High 8.0 (`CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Aug 2023
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-xg9r-w6fx-9996

## 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 (Out-of-bounds Write)

## Which versions are affected by CVE-2023-34551?

It affects 9 products.


Products: 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, Ezviz Cs-Cv310-A0-1c2wfr Firmware, Ezviz Cs-Cv310-A0-3c2wfrl-1080p Firmware, Ezviz Lc1c Firmware.

## 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.

## Is CVE-2023-34551 being exploited?

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

## Other vulnerabilities in n/a

- [CVE-2023-34552](https://insights.sbomify.com/CVE-2023-34552/): Memory corruption in n/a (medium 4.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-34551 and fix it if it is affected.

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

Affected product: n/a. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-34551/ (Markdown: https://insights.sbomify.com/CVE-2023-34551/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-34551
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-34551
- OSV: https://osv.dev/vulnerability/CVE-2023-34551

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-34551/
Summaries are generated and may contain mistakes; the official description above is the record.