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.
CVSS v3.1
Score 8.8high
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 a remote attacker to exploit a heap buffer overflow, potentially leading to arbitrary code execution. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The attack vector is adjacent network (AV:A), with low attack complexity (AC:L), no privileges required (PR:N), and no user interaction (UI:N).
Potential Impact
Successful exploitation could result in complete compromise of the affected system, including unauthorized code execution with high impact on confidentiality, integrity, and availability. This could allow attackers to take control of the system remotely.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or workaround information is provided in the available data. Organizations should monitor IBM advisories for updates and apply patches promptly once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T03:12:52.946Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a860991acd9273b498b4c23
Added to database: 08/19/2026, 19:52:49 UTC
Last enriched: 09/11/2026, 06:02:06 UTC
Last updated: 10/04/2026, 10:02:25 UTC
Views: 40
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