CVE-2026-100417 RustDesk before 1.5.0 One-Way File Transfer Bypass
Authenticated peers can bypass one-way file transfer restrictions to read files from the host clipboard in RustDesk.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-100417?
CVE-2026-100417 is a low-severity missing authorization vulnerability in rustdesk, published on 25 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
RustDesk before 1.5.0 on Windows fails to enforce the one-way file transfer option against peer clipboard file requests, allowing authenticated peers to read files from the host clipboard. Attackers can send FormatDataRequest and FileContentsRequest messages to retrieve copied files by guessing the FileGroupDescriptorW format identifier.
Weakness: CWE-862
Which versions are affected by CVE-2026-100417?
How do I fix CVE-2026-100417?
No fix has been published for CVE-2026-100417 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-100417 being exploited?
There is no known exploitation of CVE-2026-100417 in the wild and no public exploit code.
Sources
Also known as GHSA-wfj5-qqfr-qgmw.