# CVE-2022-24750: Low privilege user is able to exploit the service and gain SYSTEM privileges in UltraVNC server

> A local authenticated user can exploit the DSM plugin module in UltraVNC server to escalate privileges to SYSTEM.

- **Severity:** High 8.8 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Mar 2022
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-3mvp-cp5x-vj5g

## What is CVE-2022-24750?

CVE-2022-24750 is a high-severity vulnerability in UltraVNC, published on 10 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

UltraVNC is a free and open source remote pc access software. A vulnerability has been found in versions prior to 1.3.8.0 in which the DSM plugin module, which allows a local authenticated user to achieve local privilege escalation (LPE) on a vulnerable system. The vulnerability has been fixed to allow loading of plugins from the installed directory. Affected users should upgrade their UltraVNC to 1.3.8.1. Users unable to upgrade should not install and run UltraVNC server as a service. It is advisable to create a scheduled task on a low privilege account to launch WinVNC.exe instead. There are no known workarounds if winvnc needs to be started as a service.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2022-24750?

It affects 1 product.


Products: Uvnc Ultravnc.

## How do I fix CVE-2022-24750?

No fix has been published for CVE-2022-24750 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-24750 being exploited?

There is no known exploitation of CVE-2022-24750 in the wild and no public exploit code.

## Other vulnerabilities in UltraVNC

- [CVE-2019-8264](https://insights.sbomify.com/CVE-2019-8264/): Memory corruption in UltraVNC (critical 9.8)
- [CVE-2019-8265](https://insights.sbomify.com/CVE-2019-8265/): Memory corruption in UltraVNC (critical 9.8)
- [CVE-2019-8266](https://insights.sbomify.com/CVE-2019-8266/): Memory corruption in UltraVNC (critical 9.8)
- [CVE-2019-8280](https://insights.sbomify.com/CVE-2019-8280/): Memory corruption in UltraVNC (critical 9.8)
- [CVE-2018-15361](https://insights.sbomify.com/CVE-2018-15361/): Memory corruption in UltraVNC (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-24750 and fix it if it is affected.

What it is: CVE-2022-24750 is a high-severity vulnerability in UltraVNC, published on 10 Mar 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-24750 in the wild and no public exploit code.

Affected product: UltraVNC. 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-2022-24750/ (Markdown: https://insights.sbomify.com/CVE-2022-24750/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-24750
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-24750
- OSV: https://osv.dev/vulnerability/CVE-2022-24750

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-24750/
Summaries are generated and may contain mistakes; the official description above is the record.