CVE-2026-11419

CRITICAL EPSS 41.7%

Published Jun 5, 20263w ago · Modified Jun 17, 20261w ago

9.4 CVSS 4.0

Critical

Published Jun 5, 2026 3w ago

Last Modified Jun 17, 2026 1w ago

Description

A path traversal vulnerability exists in the Altium Enterprise Server Vault Service UploadController due to improper validation of a user-controlled path component in image upload requests. An authenticated user can supply a crafted absolute path so that the configured storage root is discarded, allowing arbitrary files to be written to any location on the server filesystem writable by the service account. Because content-controlled files can be written to web-accessible directories, or used to overwrite application binaries or configuration files, this can be escalated to remote code execution, service takeover, or denial of service. Altium 365 cloud deployments are not affected, as the affected endpoint is not reachable and the cloud storage architecture mitigates the file-write primitive.

CVSS Details

Base Score

9.4

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

41.7% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 2

CWE-22 Path Traversal Resource Mgmt

CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt

Affected Products 1

Vendor	Product	Version	Range
altium	on-prem_enterprise_server	*	<8.1.1

References 1

altium.com https://www.altium.com/platform/security-compliance/security-advisories

Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.