CVE-2026-11414 Altium CVE debrief

Who should care

Administrators and users of Altium Enterprise Server should be aware of this critical vulnerability. The ability to forge download signatures and read arbitrary files without authentication poses a significant risk to the security of the server and its data.

Technical summary

The vulnerability is caused by a hard-coded cryptographic key used for signing file download URLs in the Vault service of Altium Enterprise Server. This key is identical across all installations, making it possible for an unauthenticated attacker to forge valid download signatures. Furthermore, a path traversal vulnerability exists in the download endpoint, allowing the reading of arbitrary files on the server filesystem. These vulnerabilities can be exploited together to gain sensitive information, potentially leading to full server compromise.

Defensive priority

High

Recommended defensive actions

• Apply patches or updates provided by Altium to address the hard-coded cryptographic key and path traversal vulnerabilities.
• Review and restrict access to the Vault service and download endpoints.
• Monitor server logs for suspicious activity related to the Vault service and file downloads.
• Consider implementing additional security measures such as authentication and authorization for accessing the Vault storage area.

Evidence notes

The CVE-2026-11414 details were obtained from the official CVE record and NVD detail pages. The information provided indicates a critical vulnerability with a CVSS score of 10.

Official resources