CVE-2026-16891: CWE-125 Out-of-bounds Read in IBM AIX
Description
CVE-2026-16891 is an out-of-bounds read vulnerability in 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 low CVSS score of 3.3, indicating limited impact and requiring local privileges to exploit. No known exploits are reported in the wild, and no official patch information is provided.
CVSS v3.1
Score 3.3low
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 (CWE-125) in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. A local attacker with low privileges could leverage this flaw to obtain sensitive information from memory. The CVSS 3.1 base score is 3.3, reflecting low severity with local attack vector and no impact on integrity or availability.
Potential Impact
The impact is limited to unauthorized disclosure of sensitive information due to an out-of-bounds read. There is no impact on system integrity or availability. Exploitation requires local access and low privileges.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official patch or workaround information is provided at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T05:09:45.567Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a860d18acd9273b498f9c26
Added to database: 08/19/2026, 20:07:52 UTC
Last enriched: 09/11/2026, 07:34:04 UTC
Last updated: 10/04/2026, 10:02:25 UTC
Views: 52
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