CVE-2026-16883: CWE-125 Out-of-bounds Read in IBM AIX
Description
CVE-2026-16883 is an out-of-bounds read vulnerability (CWE-125) affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. This flaw could allow a local attacker to read sensitive information from memory. The vulnerability has a medium severity with a CVSS score of 5.5. No public exploits or patches have been indicated in the provided data.
CVSS v3.1
Score 5.5medium
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 involves an out-of-bounds read in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 that may permit a local attacker to access sensitive information. The CVSS 3.1 vector indicates it requires local access with low attack complexity and privileges, no user interaction, and impacts confidentiality but not integrity or availability.
Potential Impact
A local attacker with low privileges could exploit this vulnerability to read sensitive information from memory, potentially leading to information disclosure. There is no indication of impact on system integrity or availability. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links or advisories are provided, users should monitor IBM's official security bulletins for updates and apply any official fixes once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T04:52:35.193Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a86e0f8acd9273b49838598
Added to database: 08/20/2026, 11:11:52 UTC
Last enriched: 09/11/2026, 05:04:10 UTC
Last updated: 10/05/2026, 06:48:14 UTC
Views: 56
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