CVE-2026-18670: CWE-190 Integer Overflow or Wraparound in IBM AIX
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 by a remote attacker to cause a denial of service and potentially disclose sensitive information. The vulnerability does not require user interaction or privileges and can be exploited over the network.
AI Analysis
Technical Summary
This vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 is due to an integer underflow (CWE-190). A remote attacker can exploit this flaw to cause a denial of service condition and possibly gain access to sensitive information. The CVSS 3.1 base score is 8.2, reflecting high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and impact on confidentiality and availability.
Potential Impact
Successful exploitation can lead to denial of service and limited disclosure of sensitive information. The attack can be performed remotely without authentication or user interaction, increasing the risk to affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented at this time.
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 by a remote attacker to cause a denial of service and potentially disclose sensitive information. The vulnerability does not require user interaction or privileges and can be exploited over the network.
CVSS v3.1
Score 8.2high
Affected software
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 in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 is due to an integer underflow (CWE-190). A remote attacker can exploit this flaw to cause a denial of service condition and possibly gain access to sensitive information. The CVSS 3.1 base score is 8.2, reflecting high severity with network attack vector, low attack complexity, no privileges required, no user interaction, and impact on confidentiality and availability.
Potential Impact
Successful exploitation can lead to denial of service and limited disclosure of sensitive information. The attack can be performed remotely without authentication or user interaction, increasing the risk to affected systems.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been documented 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
- Remediation Level
- null
Threat ID: 6a877ac7acd9273b493025e9
Added to database: 08/20/2026, 22:08:07 UTC
Last enriched: 08/20/2026, 22:22:41 UTC
Last updated: 08/20/2026, 23:19:30 UTC
Views: 3
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