CVE-2026-16890: CWE-190 Integer Overflow or Wraparound in IBM AIX
Description
CVE-2026-16890 is an integer overflow or wraparound 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 obtain sensitive information or cause a denial of service. The vulnerability has a low severity rating with a CVSS score of 3.6.
CVSS v3.1
Score 3.6low
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 integer overflow or wraparound condition in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. A local attacker with low privileges and high attack complexity could exploit this flaw to gain access to sensitive information or disrupt service availability. The CVSS 3.1 vector indicates local attack vector, high attack complexity, low privileges required, no user interaction, unchanged scope, limited confidentiality impact, no integrity impact, and limited availability impact.
Potential Impact
The impact includes potential disclosure of sensitive information and denial of service conditions. The vulnerability requires local access with low privileges and has a low overall severity, indicating limited risk in typical environments.
Mitigation Recommendations
No patch or remediation information is provided in the available data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until a fix is available, restrict local access to trusted users and monitor for unusual activity related to this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T05:07:41.372Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a860d18acd9273b498f9c24
Added to database: 08/19/2026, 20:07:52 UTC
Last enriched: 09/11/2026, 07:34:10 UTC
Last updated: 10/04/2026, 10:02:25 UTC
Views: 33
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