# CVE-2026-14439 — Altium Enterprise Server

> As of 2026-07-02, CVE-2026-14439 is a Critical-severity (band derived from the CVSS v4.0 score, not stated by the CNA) vulnerability in Altium Enterprise Server, CVSS v4.0 9.4. No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-14439 as of 2026-07-02; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-07-02

## What is CVE-2026-14439?

A path traversal vulnerability exists in the Git Service component shared by Altium Enterprise Server and Altium 365. The service accepts a sequence of post-clone file-manipulation operations that use user-supplied paths without validation, allowing an authenticated user with basic git access to move arbitrary files outside the intended repository area. This file-move primitive can be used to place attacker-controlled script content into directories where it is later executed by the service, resulting in remote code execution under the Git Service account. On multi-tenant Altium 365 deployments, this could have allowed access to data belonging to other tenants on the same infrastructure node. Altium Enterprise Server is fixed in 8.1.1. The issue has been remediated across Altium 365 shared multi-tenant deployments at the service level; remediation is in progress on remaining Altium 365 deployments.

The record classifies CVE-2026-14439 under weakness classes [CWE-22](https://intel.threadlinqs.com/cwe/CWE-22), [CWE-94](https://intel.threadlinqs.com/cwe/CWE-94). 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 96 days ago.

## Severity and exploitation probability

- **CVSS v4.0 base score:** 9.4 — Critical (derived from score) (`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`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-07-01, last modified 2026-07-02

## Is CVE-2026-14439 being exploited?

It currently carries a trending score of 30 in the Threadlinqs vulnerability feed.

## Affected products and versions

- **Altium**: Enterprise Server, 365

## How to fix CVE-2026-14439

No vendor patch reference has been recorded for CVE-2026-14439 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-14439

No threat campaign in the Threadlinqs corpus currently references CVE-2026-14439, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD. Last verified by Threadlinqs on 2026-07-02. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [altium.com](https://www.altium.com/platform/security-compliance/security-advisories)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-14439
Full detection coverage and IOCs for threats exploiting CVE-2026-14439 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp