CVE-2026-17422: CWE-787 Out-of-bounds Write in IBM AIX
CVE-2026-17422 is a critical vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves an out-of-bounds write (buffer overflow) that could allow a local attacker to execute arbitrary code with high impact on confidentiality, integrity, and availability.
AI Analysis
Technical Summary
This vulnerability (CWE-787) affects IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. It is an out-of-bounds write condition that could be exploited by a local attacker to execute arbitrary code. The CVSS 3.1 base score is 9.3, indicating a critical severity with local attack vector, low attack complexity, no privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability. No official remediation or patch information is currently provided.
Potential Impact
Successful exploitation allows a local attacker to execute arbitrary code, potentially leading to full system compromise including complete loss of confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor IBM advisories closely and apply patches or mitigations as soon as they become available. Until then, restrict local access to trusted users only.
CVE-2026-17422: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-17422 is a critical vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves an out-of-bounds write (buffer overflow) that could allow a local attacker to execute arbitrary code with high impact on confidentiality, integrity, and availability.
CVSS v3.1
Score 9.3critical
Affected software
cpe:2.3:a:ibm:aix:7.2:*:*:*:*:*:*:*cpe:2.3:a:ibm:aix:7.2.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:aix:7.3:*:*:*:*:*:*:*cpe:2.3:a:ibm:aix:7.3.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_vios:4.1:*:*:*:*:*:*:*cpe:2.3:a:ibm:powervm_vios:4.1.0:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-787) affects IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. It is an out-of-bounds write condition that could be exploited by a local attacker to execute arbitrary code. The CVSS 3.1 base score is 9.3, indicating a critical severity with local attack vector, low attack complexity, no privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability. No official remediation or patch information is currently provided.
Potential Impact
Successful exploitation allows a local attacker to execute arbitrary code, potentially leading to full system compromise including complete loss of confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor IBM advisories closely and apply patches or mitigations as soon as they become available. Until then, restrict local access to trusted users only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-25T06:00:47.402Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a877ac5acd9273b493025c2
Added to database: 08/20/2026, 22:08:05 UTC
Last enriched: 08/20/2026, 22:23:19 UTC
Last updated: 08/21/2026, 00:41:34 UTC
Views: 4
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