---
id: CVE-2026-70009
title: >-
  Improper limitation of a pathname to a restricted directory ('path traversal')
  in Azure Arc allows an unauthorized attacker to elevate privileges over a
  network.
summary: >-
  Improper limitation of a pathname to a restricted directory ('path traversal')
  in Azure Arc allows an unauthorized attacker to elevate privileges over a
  network.
severity: critical
cvss: 9.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N'
cwe:
  - CWE-22
vendor: microsoft
product: azure_arc
affected:
  - azure_arc
published: '2026-09-17'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T14:36:52.633'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70009'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70009'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
epss: 0.00738
epssPercentile: 0.52602
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-19T03:56:39.745856Z'
ingestedAt: '2026-09-17T23:31:20.685Z'
---

## Overview

Improper limitation of a pathname to a restricted directory ('path traversal') in Azure Arc allows an unauthorized attacker to elevate privileges over a network.

## Affected

- `azure_arc`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.