CVE-2026-18148: CWE-117 Improper Output Neutralization for Logs
IBM i versions 7.3, 7.4, 7.5, and 7.6 contain a vulnerability where a remote authenticated attacker could inject arbitrary content into Navigator log files due to improper output neutralization for logs. This issue is classified under CWE-117 and has a medium severity rating with a CVSS score of 4.3. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
AI Analysis
Technical Summary
CVE-2026-18148 describes an improper output neutralization vulnerability (CWE-117) in IBM i Navigator log files for versions 7.3 through 7.6. This flaw allows a remote attacker with authentication privileges to inject arbitrary content into log files, potentially affecting log integrity. The vulnerability has a CVSS 3.1 base score of 4.3, indicating medium severity, with attack vector network, low attack complexity, and requiring privileges but no user interaction. No vendor advisory or patch information is currently available.
Potential Impact
The vulnerability allows an authenticated remote attacker to inject arbitrary content into Navigator log files, which could lead to misleading or corrupted logs. This may hinder forensic analysis or monitoring but does not directly impact confidentiality or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to authenticated users and monitor for suspicious activity related to log manipulation.
CVE-2026-18148: CWE-117 Improper Output Neutralization for Logs
Description
IBM i versions 7.3, 7.4, 7.5, and 7.6 contain a vulnerability where a remote authenticated attacker could inject arbitrary content into Navigator log files due to improper output neutralization for logs. This issue is classified under CWE-117 and has a medium severity rating with a CVSS score of 4.3. No official patch or remediation guidance is currently available from the vendor. There are no known exploits in the wild at this time.
CVSS v3.1
Score 4.3medium
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
CVE-2026-18148 describes an improper output neutralization vulnerability (CWE-117) in IBM i Navigator log files for versions 7.3 through 7.6. This flaw allows a remote attacker with authentication privileges to inject arbitrary content into log files, potentially affecting log integrity. The vulnerability has a CVSS 3.1 base score of 4.3, indicating medium severity, with attack vector network, low attack complexity, and requiring privileges but no user interaction. No vendor advisory or patch information is currently available.
Potential Impact
The vulnerability allows an authenticated remote attacker to inject arbitrary content into Navigator log files, which could lead to misleading or corrupted logs. This may hinder forensic analysis or monitoring but does not directly impact confidentiality or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to authenticated users and monitor for suspicious activity related to log manipulation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-28T19:12:44.960Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a7cd122bf8831d53911cfc5
Added to database: 08/12/2026, 20:01:38 UTC
Last enriched: 08/20/2026, 13:49:23 UTC
Last updated: 09/26/2026, 01:47:40 UTC
Views: 63
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