# CVE-2026-65770: Microsoft Azure Managed Instance for Apache Cassandra argument injection

Source: https://junglewise.ai/threats/cve-2026-65770-microsoft-azure-managed-instance-for-apache-cassandra-argument  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-20. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-65770 · Severity: critical · CVSS 10 · Published 2026-08-20

Azure Managed Instance for Apache Cassandra is a database service used to run Cassandra workloads in Azure. An argument injection vulnerability allows an unauthenticated attacker to execute arbitrary code remotely on the service, potentially leading to complete compromise of data and operations.

Technologies: [Microsoft Azure Managed Instance For Apache Cassandra](https://junglewise.ai/threats/technologies/azure-managed-instance-for-apache-cassandra). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-65770 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-65770 being exploited in the wild.

**How severe is CVE-2026-65770?** Critical severity, with a CVSS score of 10, published 20 August 2026.

**Which products and versions are affected?** Microsoft Azure Managed Instance For Apache Cassandra <UNKNOWN>.

**Is there a fix for CVE-2026-65770?** 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-2026-65770 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-65770?** 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

The vulnerability is an argument injection flaw (CWE-88) in improper neutralization of argument delimiters in a command. An unauthenticated attacker with network access can inject malicious arguments into command execution, bypassing intended restrictions and achieving remote code execution. The attack requires no user interaction or pre-existing authentication. Exploitation allows full system compromise including arbitrary command execution with the service's privileges.

## Affected products

- Microsoft Azure Managed Instance for Apache Cassandra <UNKNOWN>

## Timeline

- 2026-08-20: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65770](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65770)

## Related threats

- [Microsoft Azure Managed Instance for Apache Cassandra remote code execution](https://junglewise.ai/threats/cve-2026-33844-microsoft-azure-managed-instance-for-apache-cassandra-remote-code)
- [Improper access control in Azure Managed Instance for Apache Cassandra allows an authorized attacker to execute code over a network.](https://junglewise.ai/threats/cve-2026-33109-improper-access-control-in-azure-managed-instance-for-apache)