CVE-2026-2490 RustDesk Client for Windows Transfer File Link Following Information Disclosure Vulnerability
Local attackers can read arbitrary files as SYSTEM by exploiting symbolic link handling in the file transfer feature.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2490?
CVE-2026-2490 is a medium-severity path traversal vulnerability in RustDesk Client for Windows, published on 20 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
RustDesk Client for Windows Transfer File Link Following Information Disclosure Vulnerability. This vulnerability allows local attackers to disclose sensitive information on affected installations of RustDesk Client for Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the Transfer File feature. By uploading a symbolic link, an attacker can abuse the service to read arbitrary files. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM. Was ZDI-CAN-27909.
Weakness: CWE-59
Which versions are affected by CVE-2026-2490?
How do I fix CVE-2026-2490?
No fix has been published for CVE-2026-2490 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-2490 being exploited?
There is no known exploitation of CVE-2026-2490 in the wild and no public exploit code.
Sources
Also known as GHSA-4jqp-h8f8-5fh9.