CVE-2026-19437: CWE-787 Out-of-bounds Write in IBM AIX
CVE-2026-19437 is a high severity vulnerability affecting 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 remote attacker to execute arbitrary code without privileges or user interaction.
AI Analysis
Technical Summary
This vulnerability, classified as CWE-787 (Out-of-bounds Write), affects IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. It allows a remote attacker to exploit a buffer overflow condition to execute arbitrary code on the affected systems. The CVSS 3.1 base score is 8.1, indicating high impact with network attack vector, high attack complexity, no privileges required, no user interaction, and high confidentiality, integrity, and availability impacts. No official remediation or patch information is currently available from the vendor advisory or other sources.
Potential Impact
Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected systems. This could allow an attacker to fully compromise the system remotely without needing privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, organizations should monitor IBM advisories closely and consider applying any recommended workarounds or mitigations provided by IBM once available.
CVE-2026-19437: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-19437 is a high severity vulnerability affecting 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 remote attacker to execute arbitrary code without privileges or user interaction.
CVSS v3.1
Score 8.1high
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, classified as CWE-787 (Out-of-bounds Write), affects IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. It allows a remote attacker to exploit a buffer overflow condition to execute arbitrary code on the affected systems. The CVSS 3.1 base score is 8.1, indicating high impact with network attack vector, high attack complexity, no privileges required, no user interaction, and high confidentiality, integrity, and availability impacts. No official remediation or patch information is currently available from the vendor advisory or other sources.
Potential Impact
Successful exploitation could lead to remote code execution with high impact on confidentiality, integrity, and availability of the affected systems. This could allow an attacker to fully compromise the system remotely without needing privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, organizations should monitor IBM advisories closely and consider applying any recommended workarounds or mitigations provided by IBM once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-10T12:48:21.273Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a877e39acd9273b493410a4
Added to database: 08/20/2026, 22:22:49 UTC
Last enriched: 08/20/2026, 22:37:38 UTC
Last updated: 08/21/2026, 01:55:37 UTC
Views: 8
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