CVE-2026-17003: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-17003 is a high-severity vulnerability in IBM AIX versions 7.2 and 7.3, and IBM PowerVM VIOS 4.1. It involves an out-of-bounds write (CWE-787) that could allow a remote attacker to compromise system confidentiality and integrity. The vulnerability has a CVSS 3.1 base score of 7.7, indicating significant impact but requiring high attack complexity and no privileges. No known exploits are reported in the wild, and no patch or remediation details are currently provided.
CVSS v3.1
Score 7.7high
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 out-of-bounds write issue (CWE-787) affecting IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. A remote attacker could exploit this flaw to compromise the confidentiality and integrity of the affected systems. The CVSS 3.1 vector indicates the attack requires network access with high complexity, no privileges, and no user interaction. The impact includes high confidentiality and integrity loss, with low impact on availability. No vendor advisory or patch information is currently available.
Potential Impact
Successful exploitation could allow a remote attacker to compromise the confidentiality and integrity of the affected IBM AIX and PowerVM VIOS systems. This means sensitive information could be disclosed or altered by an attacker remotely. Availability impact is low. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, monitor IBM's security advisories for updates. Until a fix is available, consider limiting network exposure of affected systems and applying any recommended temporary mitigations from IBM if published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T09:36:53.010Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a877785acd9273b492c5df5
Added to database: 08/20/2026, 21:54:13 UTC
Last enriched: 09/10/2026, 21:16:53 UTC
Last updated: 10/05/2026, 06:48:14 UTC
Views: 33
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