CVE-2026-16834: CWE-190 Integer Overflow or Wraparound in IBM AIX
Description
CVE-2026-16834 is a critical integer underflow vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. This flaw could allow a remote attacker to cause a denial of service condition. The vulnerability is classified under CWE-190 (Integer Overflow or Wraparound) and has a CVSS 3.1 base score of 9.8, indicating high severity with potential impacts on confidentiality, integrity, and availability.
CVSS v3.1
Score 9.8critical
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 underflow in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. Exploitation by a remote attacker could lead to denial of service. The CVSS 3.1 vector indicates the attack requires no privileges or user interaction and can be executed remotely, with high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation can cause a denial of service, potentially disrupting system availability. The CVSS score of 9.8 reflects critical impact on confidentiality, integrity, and availability, although no known exploits are reported in the wild at this time.
Mitigation Recommendations
No patch or remediation details are provided in the available data. Patch status is not yet confirmed — check the IBM vendor advisory for current remediation guidance. Until an official fix is available, monitor IBM security advisories for updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T02:44:56.021Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a86098facd9273b498b4bef
Added to database: 08/19/2026, 19:52:47 UTC
Last enriched: 09/11/2026, 06:17:12 UTC
Last updated: 10/04/2026, 10:02:25 UTC
Views: 41
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