# CVE-2022-28761: Zoom On-Premise Deployments: Improper Access Control

> A malicious participant in a Zoom On-Premise meeting can disrupt audio and video for others due to improper access control.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A: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:** 14 Oct 2022
- **Updated:** 14 May 2025
- **Also known as:** GHSA-535x-2h8c-88m2

## What is CVE-2022-28761?

CVE-2022-28761 is a medium-severity missing authorization vulnerability in Zoom On-Premise Meeting Connector MMR, published on 14 Oct 2022. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Zoom On-Premise Meeting Connector MMR before version 4.8.20220916.131 contains an improper access control vulnerability. As a result, a malicious actor in a meeting or webinar they are authorized to join could prevent participants from receiving audio and video causing meeting disruptions.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2022-28761?

It affects 1 product.


Products: Zoom Zoom On-Premise Meeting Connector Mmr.

## How do I fix CVE-2022-28761?

No fix has been published for CVE-2022-28761 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-28761 being exploited?

There is no known exploitation of CVE-2022-28761 in the wild and no public exploit code.

## Other vulnerabilities in Zoom On-Premise Meeting Connector MMR

- [CVE-2022-28759](https://insights.sbomify.com/CVE-2022-28759/): Zoom On-Premise Deployments: Improper Access Control (high 8.2)
- [CVE-2022-28758](https://insights.sbomify.com/CVE-2022-28758/): Zoom On-Premise Deployments: Improper Access Control (high 8.2)
- [CVE-2022-28760](https://insights.sbomify.com/CVE-2022-28760/): Zoom On-Premise Deployments: Improper Access Control (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-28761 and fix it if it is affected.

What it is: CVE-2022-28761 is a medium-severity missing authorization vulnerability in Zoom On-Premise Meeting Connector MMR, published on 14 Oct 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-28761 in the wild and no public exploit code.

Affected product: Zoom On-Premise Meeting Connector MMR. 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-2022-28761/ (Markdown: https://insights.sbomify.com/CVE-2022-28761/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-28761
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-28761
- OSV: https://osv.dev/vulnerability/CVE-2022-28761

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-28761/
Summaries are generated and may contain mistakes; the official description above is the record.