CVE-2026-16913: CWE-787 Out-of-bounds Write in IBM AIX
CVE-2026-16913 is a critical vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 that allows a remote attacker to execute arbitrary code due to a stack buffer overflow. The flaw is classified as CWE-787 (Out-of-bounds Write). It has a CVSS v3.1 score of 9.8, indicating high severity with network attack vector, no privileges required, and no user interaction needed.
AI Analysis
Technical Summary
This vulnerability involves a stack buffer overflow in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. The flaw allows remote attackers to execute arbitrary code on affected systems without authentication or user interaction. The vulnerability is identified as CWE-787 (Out-of-bounds Write), which typically results from writing data outside the bounds of allocated memory buffers, leading to potential code execution or system compromise. The CVSS score of 9.8 reflects critical impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation could allow remote attackers to execute arbitrary code with system-level privileges, potentially leading to full system compromise, data loss, or service disruption. The vulnerability affects confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented in the provided data. Users should monitor IBM's security advisories for updates and apply patches promptly once available.
CVE-2026-16913: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-16913 is a critical vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 that allows a remote attacker to execute arbitrary code due to a stack buffer overflow. The flaw is classified as CWE-787 (Out-of-bounds Write). It has a CVSS v3.1 score of 9.8, indicating high severity with network attack vector, no privileges required, and no user interaction needed.
CVSS v3.1
Score 9.8critical
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 involves a stack buffer overflow in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. The flaw allows remote attackers to execute arbitrary code on affected systems without authentication or user interaction. The vulnerability is identified as CWE-787 (Out-of-bounds Write), which typically results from writing data outside the bounds of allocated memory buffers, leading to potential code execution or system compromise. The CVSS score of 9.8 reflects critical impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation could allow remote attackers to execute arbitrary code with system-level privileges, potentially leading to full system compromise, data loss, or service disruption. The vulnerability affects confidentiality, integrity, and availability of the affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented in the provided data. Users should monitor IBM's security advisories for updates and apply patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T06:35:18.982Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a860d18acd9273b498f9c36
Added to database: 08/19/2026, 20:07:52 UTC
Last enriched: 08/19/2026, 20:22:17 UTC
Last updated: 08/19/2026, 20:22:17 UTC
Views: 3
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