CVE-2026-33844 Azure Managed Instance for Apache Cassandra Remote Code Execution Vulnerability

Critical 9.0 Published Updated

An authorized attacker can execute arbitrary code remotely due to improper access control in Azure Managed Instance for Apache Cassandra.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2026-33844?

CVE-2026-33844 is a critical missing authorization vulnerability in Microsoft Azure Managed Instance for Apache Cassandra, published on 7 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Improper access control in Azure Managed Instance for Apache Cassandra allows an authorized attacker to execute code over a network.

Weakness: CWE-20

Which versions are affected by CVE-2026-33844?

It affects 1 product.

Products include Microsoft Azure Managed Instance for Apache Cassandra.

How do I fix CVE-2026-33844?

No fix has been published for CVE-2026-33844 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-2026-33844 being exploited?

There is no known exploitation of CVE-2026-33844 in the wild and no public exploit code.

Sources

Also known as GHSA-v3vj-8337-2gq4.

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