CVE-2026-16913: CWE-787 Out-of-bounds Write in IBM AIX
CVE-2026-16913 is a critical vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves a stack buffer overflow that could allow a remote attacker to execute arbitrary code without any privileges or user interaction.
AI Analysis
Technical Summary
This vulnerability is classified as CWE-787 (Out-of-bounds Write) and affects IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. The flaw allows remote code execution due to a stack buffer overflow, which can be triggered without authentication or user interaction. The CVSS v3.1 base score is 9.8, indicating a critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to execute arbitrary code on affected systems, potentially leading to full system compromise including complete loss of confidentiality, integrity, and availability.
Mitigation Recommendations
No patch or official remediation information is currently provided. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance.
CVE-2026-16913: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-16913 is a critical vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves a stack buffer overflow that could allow a remote attacker to execute arbitrary code without any privileges or user interaction.
CVSS v3.1
Score 9.8critical
Affected software
IBM
AIX
IBM
PowerVM VIOS
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 is classified as CWE-787 (Out-of-bounds Write) and affects IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. The flaw allows remote code execution due to a stack buffer overflow, which can be triggered without authentication or user interaction. The CVSS v3.1 base score is 9.8, indicating a critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthenticated remote attacker to execute arbitrary code on affected systems, potentially leading to full system compromise including complete loss of confidentiality, integrity, and availability.
Mitigation Recommendations
No patch or official remediation information is currently provided. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T06:35:18.982Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a860d18acd9273b498f9c36
Added to database: 08/19/2026, 20:07:52 UTC
Last enriched: 09/11/2026, 05:17:23 UTC
Last updated: 10/02/2026, 07:05:37 UTC
Views: 66
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