CVE-2021-4326

Local command execution via shell-built plugin commands

Published Feb 22, 2023 · Updated Aug 3, 2024

Command injection in affected Zowe CLI 1.x and 2.x releases allows local users to execute arbitrary shell commands during plugin management. Imperative's plugin install, update, uninstall, and validation paths concatenate package, registry, plugin, and environment-derived path values into command strings passed to execSync. A local account with existing privileges must invoke an affected plugin workflow, and injected commands run with that account's rights.

CVSS severity3.3
Low
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in affected Zowe CLI 1.x and 2.x releases allows local users to execute arbitrary shell commands during plugin management. Imperative's plugin install, update, uninstall, and validation paths concatenate package, registry, plugin, and environment-derived path values into command strings passed to execSync. A local account with existing privileges must invoke an affected plugin workflow, and injected commands run with that account's rights.

The record

CVE
CVE-2021-4326
Published
Feb 22, 2023
Updated
Aug 3, 2024
Vendor
Open Mainframe Project
Product
Zowe
Classifications
CWE-77, T1059
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 22, 2023CVE 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

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Is a vulnerable build present?

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

  1. Affected versionversion=1.16.0 <1.28.2
  2. Affected versionversion=2.0.0 <2.5.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Open Mainframe Project · Zoweversion=1.16.0 <1.28.2; version=2.0.0 <2.5.0

Published CVSS scores

3.3Zowe via GitHub Security AdvisoryCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command 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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