CVE-2026-11429 Path Traversal in Altium Vault ScriptsController Allows Unauthenticated Remote Code Execution
Unauthenticated attackers can exploit path traversal in Altium Vault ScriptsController to upload arbitrary files and achieve remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11429?
CVE-2026-11429 is a critical path traversal vulnerability in Altium 365, published on 5 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file uploads where a user-supplied filename component is used to construct the destination path without validation, allowing arbitrary files to be written to any location writable by the service account. Because the file write operation completes before authentication is validated, the vulnerability can be exploited without any credentials, session, or prior knowledge of the system.
An unauthenticated network attacker can use this primitive to place executable content in directories where it is later executed by the service, resulting in remote code execution under the Vault Service account. Altium Enterprise Server is fixed in 8.1.1; the issue has been remediated in Altium 365 (commercial and government cloud) at the service level.
Which versions are affected by CVE-2026-11429?
How do I fix CVE-2026-11429?
No fix has been published for CVE-2026-11429 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-2026-11429 being exploited?
There is no known exploitation of CVE-2026-11429 in the wild and no public exploit code.
Sources
Also known as GHSA-f7c8-3j67-9q8x.