CVE-2026-33844
RCE via network on Azure Managed Instance for Apache Cassandra due to input validation flaw.
Is CVE-2026-33844 being exploited?
Not confirmed. CVE-2026-33844 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.99% probability of exploitation in the next 30 days.
How severe is CVE-2026-33844?
CVE-2026-33844 is rated Critical with a CVSS score of 9.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-33844?
Yes. A fix has been recorded for CVE-2026-33844. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33844 affect?
CVE-2026-33844 affects Azure Managed Instance for Apache Cassandra. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33844?
Patch when released; restrict access to trusted networks; monitor for activity.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can execute code on the managed Cassandra instance over the network.
Patch when possible