# CVE-2020-36920: iDS6 DSSPro Digital Signage System 6.2 Privilege Escalation via Access Control

> Authenticated users can escalate privileges to full application takeover via insecure direct object references in console JavaScript functions.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Jan 2026
- **Updated:** 6 Jan 2026
- **Also known as:** GHSA-r855-vcgq-f3fh

## What is CVE-2020-36920?

CVE-2020-36920 is a high-severity vulnerability in Yerootech iDS6 DSSPro Digital Signage System, published on 6 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

iDS6 DSSPro Digital Signage System 6.2 contains an improper access control vulnerability that allows authenticated users to elevate privileges through console JavaScript functions. Attackers can create users, modify roles and permissions, and potentially achieve full application takeover by exploiting insecure direct object references.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2020-36920?


## How do I fix CVE-2020-36920?

No fix has been published for CVE-2020-36920 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-36920 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36920 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-36920 and fix it if it is affected.

What it is: CVE-2020-36920 is a high-severity vulnerability in Yerootech iDS6 DSSPro Digital Signage System, published on 6 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36920 exists.

Affected product: Yerootech iDS6 DSSPro Digital Signage System. 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-2020-36920/ (Markdown: https://insights.sbomify.com/CVE-2020-36920/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-36920
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-36920
- OSV: https://osv.dev/vulnerability/CVE-2020-36920

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-36920/
Summaries are generated and may contain mistakes; the official description above is the record.