# CVE-2021-3616: Missing authorization in Smart Camera X3, X5, and C2E firmware

> An unauthorized user can view device information and alter firmware or configuration on Lenovo Smart Cameras due to missing authorization checks.

- **Severity:** Critical 9.4 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Aug 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-qrw6-qjvm-cr2m

## What is CVE-2021-3616?

CVE-2021-3616 is a critical missing authorization vulnerability in Lenovo Smart Camera X3, X5, and C2E firmware, published on 17 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was reported in Lenovo Smart Camera X3, X5, and C2E that could allow an unauthorized user to view device information, alter firmware content and device configuration. This vulnerability is the same as CNVD-2020-68651.

Weakness: CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2021-3616?

It affects 3 products.


Products: Lenovo Smart Camera C2e Firmware, Lenovo Smart Camera X3 Firmware, Lenovo Smart Camera X5 Firmware.

## How do I fix CVE-2021-3616?

No fix has been published for CVE-2021-3616 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-3616 being exploited?

There is no known exploitation of CVE-2021-3616 in the wild and no public exploit code.

## Other vulnerabilities in Lenovo Smart Camera X3, X5, and C2E firmware

- [CVE-2021-3617](https://insights.sbomify.com/CVE-2021-3617/): Command injection in Smart Camera X3, X5, and C2E firmware (high 7.2)
- [CVE-2021-3615](https://insights.sbomify.com/CVE-2021-3615/): Code injection in Smart Camera X3, X5, and C2E firmware (medium 6.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-3616 and fix it if it is affected.

What it is: CVE-2021-3616 is a critical missing authorization vulnerability in Lenovo Smart Camera X3, X5, and C2E firmware, published on 17 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-3616 in the wild and no public exploit code.

Affected product: Lenovo Smart Camera X3, X5, and C2E firmware. 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-2021-3616/ (Markdown: https://insights.sbomify.com/CVE-2021-3616/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-3616
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-3616
- OSV: https://osv.dev/vulnerability/CVE-2021-3616

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-3616/
Summaries are generated and may contain mistakes; the official description above is the record.