CVE-2021-28458Public exploit

OS command execution via shell-interpolated subscription ID

Published Apr 13, 2021 · Updated Aug 3, 2024

Command injection in Microsoft @azure/ms-rest-nodeauth before 3.0.8 allows context-dependent attackers to execute arbitrary OS commands. The execAz function passes a command string containing the subscription argument to child_process.exec, allowing shell metacharacters supplied through AzureCliCredentials.setDefaultSubscription to be interpreted. Reachability requires attacker-controlled data to reach that API and Azure CLI to be installed; injected commands run with the host process's privileges.

CVSS severity7.8
High
EPSS probability1.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Command injection in Microsoft @azure/ms-rest-nodeauth before 3.0.8 allows context-dependent attackers to execute arbitrary OS commands. The execAz function passes a command string containing the subscription argument to child_process.exec, allowing shell metacharacters supplied through AzureCliCredentials.setDefaultSubscription to be interpreted. Reachability requires attacker-controlled data to reach that API and Azure CLI to be installed; injected commands run with the host process's privileges.

The record

CVE
CVE-2021-28458
Published
Apr 13, 2021
Updated
Aug 3, 2024
Vendor
Microsoft
Product
@azure/ms-rest-nodeauth
Classifications
CWE-269, T1059
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=0.8.0 <publication

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · @azure/ms-rest-nodeauthversion=0.8.0 <publication

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1059Command and Scripting Interpreter

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo