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Azure Arc Elevation of Privilege Vulnerability

CVE-2026-70009 is an elevation of privilege vulnerability in Azure Arc (rated Critical, CVSS 9.3). Microsoft fixed it in the service; customers need to do nothing.

1 version

Facts

Microsoft id
CVE-2026-70009
Products
Azure Arc
Severity
Critical
Impact
Elevation of Privilege
CVSS
9.3
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N/E:U/RL:O/RC:C
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
Customer action required
No
Release
2026-Sep
Assigned by
Microsoft
Weakness
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
MSRC revision
1.0
Status pages
Azure Arc status
First captured by us
(from our first import of this list)
Microsoft last modified
Source
Security updates · open the original at Microsoft

Microsoft's revision notes

  1. Revision 1.0, 2026-09-17: Information published.

Microsoft says

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

Security updates,

Read Microsoft's full post

What Microsoft changed

One version so far. If Microsoft edits it, each change shows here with what was removed and added.

  1. First version we captured ·

    The text as we first saw it

    Seen by us · Microsoft's timestamp · Microsoft's page

Other changes for Azure Arc

Last updated