CVE-2026-65770Network attack vector

Unauthenticated code execution via argument injection

Published Aug 20, 2026 · Updated Aug 25, 2026

Argument injection in Microsoft Azure Managed Instance for Apache Cassandra allows remote attackers to execute code over a network. Microsoft has not identified the vulnerable command-building component, input field, or endpoint; the record only states that command argument delimiters are not neutralized. The attack requires no credentials or user interaction and grants execution across a security boundary, but Microsoft has not disclosed the resulting execution context.

CVSS severity10.0
Critical
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Argument injection in Microsoft Azure Managed Instance for Apache Cassandra allows remote attackers to execute code over a network. Microsoft has not identified the vulnerable command-building component, input field, or endpoint; the record only states that command argument delimiters are not neutralized. The attack requires no credentials or user interaction and grants execution across a security boundary, but Microsoft has not disclosed the resulting execution context.

The record

CVE
CVE-2026-65770
Published
Aug 20, 2026
Updated
Aug 25, 2026
Vendor
Microsoft
Product
Azure Managed Instance for Apache Cassandra
Classifications
CWE-88, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Azure Managed Instance for Apache Cassandraversion=-

Published CVSS scores

10.0GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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