CVE-2022-39327Public exploitNetwork attack vector

Command execution via PowerShell argument dequoting

Published Oct 25, 2022 · Updated Apr 22, 2025

OS command injection in Microsoft Azure CLI before 2.40.0 allows remote attackers to execute commands through externally supplied arguments. The Windows az.cmd entry script passes PowerShell-stripped arguments to cmd.exe without preserving quotes, so & or | is interpreted as command syntax. Exploitation requires Windows, PowerShell, and an externally controlled parameter containing either metacharacter; injected commands run with the hosting process's privileges.

CVSS severity8.1
High
EPSS probability3.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Microsoft Azure CLI before 2.40.0 allows remote attackers to execute commands through externally supplied arguments. The Windows az.cmd entry script passes PowerShell-stripped arguments to cmd.exe without preserving quotes, so & or | is interpreted as command syntax. Exploitation requires Windows, PowerShell, and an externally controlled parameter containing either metacharacter; injected commands run with the hosting process's privileges.

The record

CVE
CVE-2022-39327
Published
Oct 25, 2022
Updated
Apr 22, 2025
Vendor
Microsoft
Product
Microsoft Azure CLI
Classifications
CWE-78, CWE-94, T1059.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.40.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Azure CLIversion=< 2.40.0

Published CVSS scores

8.1GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-94Improper Control of Generation of Code ('Code Injection')
T1059.003Command and Scripting Interpreter: Windows Command Shell

Public exploit references

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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