CVE-2025-34352 JumpCloud Remote Assist < 0.317.0 Arbitrary File Write/Delete via Insecure Temp Directory
Local attackers can escalate privileges to SYSTEM or cause denial of service via insecure temp directory handling in JumpCloud Remote Assist.
- 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-2025-34352?
CVE-2025-34352 is a high-severity path traversal vulnerability in JumpCloud Inc. Remote Assist, published on 2 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
JumpCloud Remote Assist for Windows versions prior to 0.317.0 include an uninstaller that is invoked by the JumpCloud Windows Agent as NT AUTHORITY\SYSTEM during agent uninstall or update operations. The Remote Assist uninstaller performs privileged create, write, execute, and delete actions on predictable files inside a user-writable %TEMP% subdirectory without validating that the directory is trusted or resetting its ACLs when it already exists. A local, low-privileged attacker can pre-create the directory with weak permissions and leverage mount-point or symbolic-link redirection to (a) coerce arbitrary file writes to protected locations, leading to denial of service (e.g., by overwriting sensitive system files), or (b) win a race to redirect DeleteFileW() to attacker-chosen targets, enabling arbitrary file or folder deletion and local privilege escalation to SYSTEM. This issue is fixed in JumpCloud Remote Assist 0.317.0 and affects Windows systems where Remote Assist is installed and managed through the Agent lifecycle.
Which versions are affected by CVE-2025-34352?
How do I fix CVE-2025-34352?
No fix has been published for CVE-2025-34352 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-2025-34352 being exploited?
There is no known exploitation of CVE-2025-34352 in the wild and no public exploit code.
Sources
Also known as GHSA-qjc9-f8hg-mv2p.