Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary Control Language commands due to insufficient input validation.
Published: 2026-08-12
Score: 8.3 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability allows a remote authenticated attacker to execute arbitrary Control Language commands on IBM i because the system fails to properly validate input. This can result in full system compromise, data exfiltration, or alteration of critical system configurations. The weakness is an OS command injection flaw (CWE‑78).

Affected Systems

IBM i versions 7.3, 7.4, 7.5, and 7.6 are affected. The issue is present in all sub‑sub‑release 0 variants of these major releases. Users of any of these releases should verify whether they are running the vendor‑supplied PTFs listed by IBM.

Risk and Exploitability

With a CVSS score of 8.3 the vulnerability is considered high severity. The EPSS score is not available, but the lack of a KEV listing does not preclude exploitation. The likely attack vector is a remote connection over a network where the attacker has valid credentials; once authenticated, the attacker can supply malicious input to trigger the command injection.

Generated by OpenCVE AI on August 12, 2026 at 23:27 UTC.

Remediation

Vendor Solution

IBM strongly recommends addressing the vulnerability now. IBM i Release5770-SS1 Option 3 PTF Number(s)PTF Download Link(s)7.6SJ10887 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10887 7.5SJ10888 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10888 7.4SJ10890 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10890 7.3SJ10891 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ10891 IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.


OpenCVE Recommended Actions

  • Apply the PTFs designated by IBM: SJ10887 for 7.6, SJ10888 for 7.5, SJ10890 for 7.4, SJ10891 for 7.3.
  • Upgrade any unsupported IBM i releases to a supported, patched version as recommended by IBM.
  • Implement strict least‑privilege controls, limiting authenticated user access to the minimum necessary privileges until the patches are applied.

Generated by OpenCVE AI on August 12, 2026 at 23:27 UTC.

Tracking

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Advisories

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History

Thu, 13 Aug 2026 16:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:ibm:i:*:*:*:*:*:*:*:*

Wed, 12 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 12 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
Description IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to execute arbitrary Control Language commands due to insufficient input validation.
Title IBM i is Affected By Multiple Vulnerabilities in Navigator for i
First Time appeared Ibm
Ibm i
Weaknesses CWE-78
CPEs cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm i
References
Metrics cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-08-12T18:51:19.840Z

Reserved: 2026-07-29T12:37:56.153Z

Link: CVE-2026-18235

cve-icon Vulnrichment

Updated: 2026-08-12T18:51:09.630Z

cve-icon NVD

Status : Analyzed

Published: 2026-08-12T18:17:28.000

Modified: 2026-08-13T16:27:27.327

Link: CVE-2026-18235

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T23:30:10Z

Weaknesses
  • CWE-78

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')