CVE-2026-18832: CWE-787 Out-of-bounds Write in IBM AIX
CVE-2026-18832 is a high severity vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves a heap-based buffer overflow that could allow a remote attacker to execute arbitrary code without requiring user interaction or privileges. The vulnerability is classified under CWE-787 (Out-of-bounds Write). No official patch or remediation information is currently available.
AI Analysis
Technical Summary
This vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 is caused by a heap-based buffer overflow (CWE-787). It allows remote attackers to execute arbitrary code due to improper bounds checking during memory operations. The CVSS v3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. The vulnerability does not require user interaction or privileges and can be exploited remotely. No vendor advisory or patch information is currently provided.
Potential Impact
Successful exploitation could lead to remote code execution with full impact on confidentiality, integrity, and availability of the affected systems. This could allow attackers to fully compromise affected IBM AIX and PowerVM VIOS systems remotely without authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM security advisories for updates. No temporary or workaround mitigations are currently documented.
CVE-2026-18832: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-18832 is a high severity vulnerability affecting IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. It involves a heap-based buffer overflow that could allow a remote attacker to execute arbitrary code without requiring user interaction or privileges. The vulnerability is classified under CWE-787 (Out-of-bounds Write). No official patch or remediation information is currently available.
CVSS v3.1
Score 8.8high
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 caused by a heap-based buffer overflow (CWE-787). It allows remote attackers to execute arbitrary code due to improper bounds checking during memory operations. The CVSS v3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. The vulnerability does not require user interaction or privileges and can be exploited remotely. No vendor advisory or patch information is currently provided.
Potential Impact
Successful exploitation could lead to remote code execution with full impact on confidentiality, integrity, and availability of the affected systems. This could allow attackers to fully compromise affected IBM AIX and PowerVM VIOS systems remotely without authentication.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, monitor IBM security advisories for updates. No temporary or workaround mitigations are currently documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-04T14:21:39.143Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a877ac7acd9273b493025f8
Added to database: 08/20/2026, 22:08:07 UTC
Last enriched: 08/20/2026, 22:22:24 UTC
Last updated: 08/20/2026, 22:22:24 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.