CVE-2026-17425: CWE-787 Out-of-bounds Write in IBM AIX
Description
CVE-2026-17425 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 out-of-bounds write (CWE-787) that could allow a remote attacker to cause a denial of service via a stack buffer overflow. The vulnerability does not impact confidentiality or integrity but results in service disruption. No known exploits are reported in the wild, and no patch information is provided in the source data.
CVSS v3.1
Score 7.5high
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 (CWE-787) in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 that can be triggered remotely, leading to a denial of service condition caused by a stack buffer overflow. The CVSS 3.1 base score is 7.5, reflecting high severity with network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability (denial of service). There is no indication of impact on confidentiality or integrity. The vulnerability is publicly disclosed but no patch or remediation details are provided in the input data.
Potential Impact
Successful exploitation results in denial of service due to a stack buffer overflow. There is no impact on confidentiality or integrity. The attack can be performed remotely without authentication or user interaction, making it a significant availability risk for affected systems.
Mitigation Recommendations
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. No vendor-provided mitigation or workaround information is included in the provided data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-25T06:08:48.882Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a877ac7acd9273b493025e5
Added to database: 08/20/2026, 22:08:07 UTC
Last enriched: 09/10/2026, 20:02:06 UTC
Last updated: 10/05/2026, 06:48:14 UTC
Views: 48
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