CVE-2026-70340 Azure CycleCloud Elevation of Privilege Vulnerability

High 8.1 Published 11 Aug 2026 Updated 28 Oct 2026

An authorized attacker can elevate privileges in Azure CycleCloud due to missing authorization checks.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-70340?

CVE-2026-70340 is a high-severity missing authorization vulnerability in Microsoft Azure CycleCloud 8.9.1, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Missing authorization in Azure CycleCloud allows an authorized attacker to elevate privileges over a network.

Weakness: CWE-862

Which versions are affected by CVE-2026-70340?

It affects 1 product.

Products include Microsoft Azure Cyclecloud.

How do I fix CVE-2026-70340?

No fix has been published for CVE-2026-70340 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-70340 being exploited?

There is no known exploitation of CVE-2026-70340 in the wild and no public exploit code.

Sources

Also known as GHSA-mjq4-9r9p-4wxh.