# CVE-2016-7836: SKYSEA Client View Improper Authentication

> Remote attackers can execute arbitrary code by exploiting an authentication flaw in the TCP connection to the management console.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 14 Oct 2025 (CISA KEV)
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Jun 2017
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-6gc8-5v43-5g2x

## What is CVE-2016-7836?

CVE-2016-7836 is a critical authentication bypass vulnerability in SKYSEA Client View, published on 9 Jun 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

SKYSEA Client View Ver.11.221.03 and earlier allows remote code execution via a flaw in processing authentication on the TCP connection with the management console program.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2016-7836?

It affects 1 product.


Products: Skygroup Skysea Client View.

## How do I fix CVE-2016-7836?

No fix has been published for CVE-2016-7836 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 4 Nov 2025.

## Is CVE-2016-7836 being exploited?

Yes. Attackers have exploited CVE-2016-7836 in the wild since at least 14 Oct 2025.

## Other vulnerabilities in SKYSEA Client View

- [CVE-2024-41139](https://insights.sbomify.com/CVE-2024-41139/): Privilege escalation in SKYSEA Client View (high 7.8)
- [CVE-2024-41143](https://insights.sbomify.com/CVE-2024-41143/): Privilege escalation in SKYSEA Client View (high 7.8)
- [CVE-2024-21805](https://insights.sbomify.com/CVE-2024-21805/): Missing authorization in SKYSEA Client View (high 7.8)
- [CVE-2021-20616](https://insights.sbomify.com/CVE-2021-20616/): Privilege escalation in SKYSEA Client View (high 7.8)
- [CVE-2020-5617](https://insights.sbomify.com/CVE-2020-5617/): Privilege escalation in SKYSEA Client View (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-7836 and fix it if it is affected.

What it is: CVE-2016-7836 is a critical authentication bypass vulnerability in SKYSEA Client View, published on 9 Jun 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2016-7836 in the wild since at least 14 Oct 2025.

Affected product: SKYSEA Client View. 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-2016-7836/ (Markdown: https://insights.sbomify.com/CVE-2016-7836/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-7836
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-7836
- OSV: https://osv.dev/vulnerability/CVE-2016-7836

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-7836/
Summaries are generated and may contain mistakes; the official description above is the record.