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CVE-2026-18509: CWE-285 Improper Authorization

0
High
VulnerabilityCVE-2026-18509cvecve-2026-18509cwe-285
Published: 08/13/2026 (08/13/2026, 20:43:18 UTC)
Source: CVE Database V5
Vendor/Project: IBM

Description

CVE-2026-18509 is a high-severity vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6. It allows a local authenticated attacker to escalate privileges via the Navigator for i debugger. Exploitation could lead to unauthorized access or manipulation of sensitive data and creation of new profiles with elevated privileges on the affected IBM i systems.

CVSS v3.1

Score 8.2high

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected software

IBM

Affected versions
=7.6=7.5=7.4=7.3
CPE configurations (8)
cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/21/2026, 13:22:40 UTC

Technical Analysis

IBM i versions 7.3 through 7.6 contain an improper authorization vulnerability (CWE-285) in the Navigator for i debugger component. A local attacker with authentication can exploit this flaw to escalate privileges, potentially gaining high-level access to sensitive data or the ability to create new privileged profiles. The vulnerability has a CVSS 3.1 base score of 8.2, indicating high impact on confidentiality and integrity with network attack vector, high attack complexity, and low privileges required.

Potential Impact

Successful exploitation allows an authenticated local attacker to escalate privileges, compromising system confidentiality and integrity by accessing or manipulating sensitive data and creating new privileged user profiles. Availability impact is not indicated. This could lead to significant security breaches on affected IBM i systems.

Mitigation Recommendations

Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. No official fix or temporary workaround is indicated in the provided data. Until a patch is available, restrict local authenticated access to trusted users only and monitor for suspicious activity related to the Navigator for i debugger.

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Technical Details

Data Version
5.2
Assigner Short Name
ibm
Date Reserved
2026-07-31T17:16:23.194Z
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6a7e2fb3bf8831d539cb5cd5

Added to database: 08/13/2026, 20:57:23 UTC

Last enriched: 08/21/2026, 13:22:40 UTC

Last updated: 09/26/2026, 01:47:40 UTC

Views: 47

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