CVE-2026-16847: CWE-787 Out-of-bounds Write in IBM AIX
CVE-2026-16847 is a high severity vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves a heap buffer overflow that could allow a remote attacker to execute arbitrary code without requiring user interaction or privileges. The vulnerability is classified under CWE-787 (Out-of-bounds Write).
AI Analysis
Technical Summary
This vulnerability in IBM AIX 7.2 and 7.3, and IBM PowerVM VIOS 4.1, is due to a heap buffer overflow condition that can be triggered remotely. Successful exploitation could lead to arbitrary code execution by an unauthenticated attacker. The CVSS v3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. No official patch or remediation level has been published yet, and no known exploits are reported in the wild as of the publication date.
Potential Impact
An attacker exploiting this vulnerability could execute arbitrary code remotely, potentially leading to full system compromise including unauthorized disclosure, modification, or destruction of data and disruption of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM's security advisories for updates and consider applying any recommended temporary mitigations if provided.
CVE-2026-16847: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-16847 is a high severity vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves a heap buffer overflow that could allow a remote attacker to execute arbitrary code without requiring user interaction or privileges. The vulnerability is classified under CWE-787 (Out-of-bounds Write).
CVSS v3.1
Score 8.8high
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 in IBM AIX 7.2 and 7.3, and IBM PowerVM VIOS 4.1, is due to a heap buffer overflow condition that can be triggered remotely. Successful exploitation could lead to arbitrary code execution by an unauthenticated attacker. The CVSS v3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. No official patch or remediation level has been published yet, and no known exploits are reported in the wild as of the publication date.
Potential Impact
An attacker exploiting this vulnerability could execute arbitrary code remotely, potentially leading to full system compromise including unauthorized disclosure, modification, or destruction of data and disruption of service.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM's security advisories for updates and consider applying any recommended temporary mitigations if provided.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T03:12:52.946Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a860991acd9273b498b4c23
Added to database: 08/19/2026, 19:52:49 UTC
Last enriched: 08/19/2026, 20:09:13 UTC
Last updated: 08/19/2026, 21:12:17 UTC
Views: 2
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