# CVE-2023-39217: Denial of service in Zoom SDK's

> An unauthenticated attacker can cause a denial of service in applications using the Zoom SDK via network access due to improper input validation.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Aug 2023
- **Updated:** 10 Oct 2024
- **Also known as:** GHSA-h45c-25x4-6qq4

## What is CVE-2023-39217?

CVE-2023-39217 is a medium-severity denial of service vulnerability in Zoom Meeting Software Development Kit, published on 8 Aug 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Improper input validation in Zoom SDK’s before 5.14.10 may allow an unauthenticated user to enable a denial of service via network access.

Weakness: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page)

## Which versions are affected by CVE-2023-39217?

It affects 2 products.


Products: Zoom Meeting Software Development Kit, Zoom Video Software Development Kit.

## How do I fix CVE-2023-39217?

No fix has been published for CVE-2023-39217 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-39217 being exploited?

There is no known exploitation of CVE-2023-39217 in the wild and no public exploit code.

## Other vulnerabilities in Zoom Meeting Software Development Kit

- [CVE-2025-49457](https://insights.sbomify.com/CVE-2025-49457/): Zoom Clients for Windows - Untrusted Search Path (critical 9.6)
- [CVE-2024-24691](https://insights.sbomify.com/CVE-2024-24691/): Privilege escalation in Zoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom Meeting SDK for Windows (critical 9.6)
- [CVE-2025-30663](https://insights.sbomify.com/CVE-2025-30663/): Zoom Workplace Apps - Time-of-check Time-of-use (high 8.8)
- [CVE-2025-0147](https://insights.sbomify.com/CVE-2025-0147/): Zoom Workplace App for Linux - Type Confusion (high 8.8)
- [CVE-2023-49647](https://insights.sbomify.com/CVE-2023-49647/): Zoom Desktop Client for Windows - Improper Access Control (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-39217 and fix it if it is affected.

What it is: CVE-2023-39217 is a medium-severity denial of service vulnerability in Zoom Meeting Software Development Kit, published on 8 Aug 2023. 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-2023-39217 in the wild and no public exploit code.

Affected product: Zoom Meeting Software Development Kit. 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-2023-39217/ (Markdown: https://insights.sbomify.com/CVE-2023-39217/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-39217
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-39217
- OSV: https://osv.dev/vulnerability/CVE-2023-39217

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-39217/
Summaries are generated and may contain mistakes; the official description above is the record.