# CVE-2026-30783: RustDesk Client Can Orphan API Channel to Ignore All Admin Commands and ACL Policies

> Attackers can orphan the API channel to bypass admin commands and ACL policies in RustDesk Client, requiring an upgrade to remediate.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N`)
- **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:** 5 Mar 2026
- **Updated:** 22 Jun 2026
- **Also known as:** GHSA-f8r5-ghjf-q2pv

## What is CVE-2026-30783?

CVE-2026-30783 is a medium-severity vulnerability in rustdesk-client RustDesk Client, published on 5 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android, WebClient (Client signaling, API sync loop, config management modules) allows Privilege Abuse.

 This vulnerability is associated with program files src/rendezvous_mediator.Rs, src/hbbs_http/sync.Rs and program routines API sync loop, api-server config handling.

This issue affects RustDesk Client: through 1.4.8.

Weakness: CWE-841 (Improper Enforcement of Behavioral Workflow), CWE-602 (Client-Side Enforcement of Server-Side Security)

## Which versions are affected by CVE-2026-30783?

It affects 1 product.


Products: Rustdesk Rustdesk.

## How do I fix CVE-2026-30783?

No fix has been published for CVE-2026-30783 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-30783 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30783 exists.

## Other vulnerabilities in rustdesk-client RustDesk Client

- [CVE-2024-25140](https://insights.sbomify.com/CVE-2024-25140/): Misconfiguration in n/a (critical 9.8)
- [CVE-2026-30793](https://insights.sbomify.com/CVE-2026-30793/): RustDesk Flutter URI Handler Sets Permanent Password Without Privilege Check or User Confirmation (critical 9.3)
- [CVE-2026-30797](https://insights.sbomify.com/CVE-2026-30797/): RustDesk rustdesk://config/ URI Silently Re-homes Client to Attacker-Controlled Server (critical 9.3)
- [CVE-2026-30791](https://insights.sbomify.com/CVE-2026-30791/): RustDesk Client Accepts Pseudo-Encrypted Config Strings Without Cryptographic Validation (high 8.7)
- [CVE-2026-30795](https://insights.sbomify.com/CVE-2026-30795/): RustDesk HTTP Client Silently Accepts Invalid TLS Certificates After Handshake Failure (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-30783 and fix it if it is affected.

What it is: CVE-2026-30783 is a medium-severity vulnerability in rustdesk-client RustDesk Client, published on 5 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-30783 exists.

Affected product: rustdesk-client RustDesk Client. 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-2026-30783/ (Markdown: https://insights.sbomify.com/CVE-2026-30783/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-30783
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-30783
- OSV: https://osv.dev/vulnerability/CVE-2026-30783

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-30783/
Summaries are generated and may contain mistakes; the official description above is the record.