CVE-2026-18509: CWE-285 Improper Authorization
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.
AI Analysis
Technical Summary
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.
CVE-2026-18509: CWE-285 Improper Authorization
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
Affected software
IBM
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:*:*:*:*:*:*:*Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
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.
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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