CVE-2026-65770: Azure Managed Instance for Apache Cassandra Remote Code Execution Vulnerability

criticalCVSS 10CVE-2026-65770

Improper neutralization of argument delimiters in a command ('argument injection') in Azure Managed Instance for Apache Cassandra allows an unauthorized attacker to execute code over a network.

CSIRTS triage

vendor: Microsoft product: Azure Managed Instance for Apache Cassandra Code injection Remote code execution

What: Argument injection allows unauthorized remote code execution.
Who is affected: Azure Managed Instance for Apache Cassandra deployments are affected.
Urgency: Critical severity with CVSS 10 requires immediate patching despite no reported exploitation.
Action: Apply available Microsoft security updates immediately.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: critical — CVSS 10
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65770

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-657700.58% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 45% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-65770	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.