CVE-2026-18073

Authenticated command manipulation via unneutralized CL parameters

Published Sep 4, 2026 · Updated Sep 4, 2026

Command injection in IBMi 7.3 through 7.6 allows local authenticated attackers to alter CL command behavior through crafted parameters. The Debug Server passes attacker-controlled parameter text into a CL command without neutralizing special elements, so injected parameters change the intended operation. Exploitation requires a local low-privileged account and can expose or modify data within the affected command's authority.

CVSS severity4.4
Medium
EPSS probability0.10%
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 IBMi 7.3 through 7.6 allows local authenticated attackers to alter CL command behavior through crafted parameters. The Debug Server passes attacker-controlled parameter text into a CL command without neutralizing special elements, so injected parameters change the intended operation. Exploitation requires a local low-privileged account and can expose or modify data within the affected command's authority.

The record

CVE
CVE-2026-18073
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
IBM
Product
IBM i
Classifications
CWE-78, T1059
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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?

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

  1. Affected versionversion=7.3
  2. Affected versionversion=7.4
  3. Affected versionversion=7.5
  4. Affected versionversion=7.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

IBM · IBM iversion=7.3; version=7.4; version=7.5; version=7.6

Published CVSS scores

4.4IBMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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