CVE-2026-18670: CWE-190 Integer Overflow or Wraparound in IBM AIX
Description
CVE-2026-18670 is a high-severity vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves an integer underflow that could be exploited remotely to cause a denial of service and potentially disclose sensitive information. The vulnerability does not require user interaction or privileges to exploit and has a network attack vector.
CVSS v3.1
Score 8.2high
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 an integer underflow (CWE-190) in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. A remote attacker can exploit this flaw to cause a denial of service and potentially gain access to sensitive information. The CVSS 3.1 base score is 8.2, reflecting a high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and partial confidentiality impact with high availability impact.
Potential Impact
Successful exploitation can lead to denial of service conditions and limited disclosure of sensitive information. The vulnerability allows remote attackers to cause service disruption and potentially access some confidential data without authentication.
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
- 2026-08-03T15:01:19.789Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a877ac7acd9273b493025e9
Added to database: 08/20/2026, 22:08:07 UTC
Last enriched: 09/10/2026, 20:01:55 UTC
Last updated: 10/05/2026, 06:48:14 UTC
Views: 45
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