CVE-2026-18847: CWE-346 Origin Validation Error
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote unauthenticated attacker to harvest credentials due to spoofing of Navigator for i.
AI Analysis
Technical Summary
This vulnerability in IBM i versions 7.3 through 7.6 is due to improper origin validation (CWE-346) in the Navigator for i interface. An attacker can remotely spoof this interface to trick users into revealing credentials. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability is exploitable remotely without authentication but requires user interaction. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation could lead to credential harvesting, compromising user authentication and potentially allowing further unauthorized access. The vulnerability impacts confidentiality, integrity, and availability as indicated by the CVSS score. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution when interacting with Navigator for i interfaces and verify the authenticity of the interface to avoid credential disclosure.
CVE-2026-18847: CWE-346 Origin Validation Error
Description
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote unauthenticated attacker to harvest credentials due to spoofing of Navigator for i.
CVSS v3.1
Score 8.8high
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
This vulnerability in IBM i versions 7.3 through 7.6 is due to improper origin validation (CWE-346) in the Navigator for i interface. An attacker can remotely spoof this interface to trick users into revealing credentials. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability is exploitable remotely without authentication but requires user interaction. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation could lead to credential harvesting, compromising user authentication and potentially allowing further unauthorized access. The vulnerability impacts confidentiality, integrity, and availability as indicated by the CVSS score. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution when interacting with Navigator for i interfaces and verify the authenticity of the interface to avoid credential disclosure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-04T15:16:48.425Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7ca94fbf8831d539e05c6f
Added to database: 08/12/2026, 17:11:43 UTC
Last enriched: 08/12/2026, 17:26:28 UTC
Last updated: 09/26/2026, 13:47:43 UTC
Views: 47
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