# CVE-2023-36539: Information disclosure in Zoom clients

> Zoom clients may expose sensitive information intended to be encrypted, allowing attackers to read confidential data.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:H/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:** 30 Jun 2023
- **Updated:** 28 Oct 2024
- **Also known as:** GHSA-9225-wwj6-c3w3

## What is CVE-2023-36539?

CVE-2023-36539 is a medium-severity vulnerability in Zoom Rooms, published on 30 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Exposure of information intended to be encrypted by some Zoom clients may lead to disclosure of sensitive information.

Weakness: CWE-326 (Inadequate Encryption Strength), CWE-325 (Missing Cryptographic Step), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2023-36539?

It affects 9 products.


Products: Zoom Meetings, Zoom Poly Ccx 600 Firmware, Zoom Poly Ccx 700 Firmware, Zoom Rooms, Zoom Video Software Development Kit, Zoom Yealink Mp54 Firmware, Zoom Yealink Mp56 Firmware, Zoom Yealink Vp59 Firmware, Zoom Zoom.

## How do I fix CVE-2023-36539?

No fix has been published for CVE-2023-36539 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-36539 being exploited?

There is no known exploitation of CVE-2023-36539 in the wild and no public exploit code.

## Other vulnerabilities in Zoom Rooms

- [CVE-2021-33907](https://insights.sbomify.com/CVE-2021-33907/): Code injection in Zoom Client for Meetings for Windows (critical 9.8)
- [CVE-2022-28768](https://insights.sbomify.com/CVE-2022-28768/): Local Privilege Escalation in Zoom Client Installer for macOS (high 8.8)
- [CVE-2022-28763](https://insights.sbomify.com/CVE-2022-28763/): Improper URL parsing in Zoom Clients (high 8.8)
- [CVE-2022-28757](https://insights.sbomify.com/CVE-2022-28757/): Local Privilege Escalation in Auto Updater for Zoom Client for Meetings for macOS (high 8.8)
- [CVE-2022-28751](https://insights.sbomify.com/CVE-2022-28751/): Local Privilege Escalation in Zoom Client for Meetings for MacOS (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-36539 and fix it if it is affected.

What it is: CVE-2023-36539 is a medium-severity vulnerability in Zoom Rooms, published on 30 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-36539 in the wild and no public exploit code.

Affected product: Zoom Rooms. 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-2023-36539/ (Markdown: https://insights.sbomify.com/CVE-2023-36539/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-36539
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-36539
- OSV: https://osv.dev/vulnerability/CVE-2023-36539

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-36539/
Summaries are generated and may contain mistakes; the official description above is the record.