Quick answers
- Is CVE-2026-33844 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-33844 being exploited in the wild.
- How severe is CVE-2026-33844?
- Critical severity, with a CVSS score of 9, published 7 May 2026.
- Which products and versions are affected?
- Microsoft Azure Managed Instance For Apache Cassandra All versions prior to June 2026 update.
- Is there a fix for CVE-2026-33844?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-33844 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-33844?
- Check whether you run Microsoft Azure Managed Instance For Apache Cassandra at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A critical vulnerability exists in Azure Managed Instance for Apache Cassandra due to improper access control and improper input validation (CWE-20). An attacker with low-privileged credentials (PR:L) can exploit this flaw over the network to achieve remote code execution. The vulnerability is characterized by a scope change (S:C), indicating that an exploit can impact components beyond the immediate security scope of the Cassandra instance. While the attack requires minimal complexity, it does require some form of user interaction (UI:R) to succeed. Microsoft has addressed this issue in the managed service environment.
Affected products
- Microsoft Azure Managed Instance for Apache Cassandra All versions prior to June 2026 update
Timeline
- 2026-05-07: advisory: Initial advisory published by Microsoft
- 2026-06-01: other: Advisory updated to clarify access control and input validation details