CVE-2026-70009 Azure Arc Elevation of Privilege Vulnerability

Critical 9.3 Published Updated

An attacker can exploit a path traversal flaw in Azure Arc to elevate privileges over the network.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2026-70009?

CVE-2026-70009 is a critical path traversal vulnerability in Microsoft Azure ARC, published on 17 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

Weakness: CWE-22

Which versions are affected by CVE-2026-70009?

It affects 1 product.

Products include Microsoft Azure Arc.

How do I fix CVE-2026-70009?

No fix has been published for CVE-2026-70009 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-70009 being exploited?

There is no known exploitation of CVE-2026-70009 in the wild and no public exploit code.

Sources

Also known as GHSA-9j4f-9vq9-m3f6.

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