CVE-2026-16827: CWE-908 Use of Uninitialized Resource in IBM AIX
Description
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to cause a denial of service due to the use of an uninitialized stack pointer.
CVSS v3.1
Score 5.9medium
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 involves the use of an uninitialized stack pointer in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS 4.1. This flaw could allow a remote attacker to cause a denial of service condition. The CVSS 3.1 vector indicates the attack requires network access with high attack complexity and no privileges or user interaction, impacting availability only.
Potential Impact
The impact is a denial of service condition caused by the use of an uninitialized resource (stack pointer). There is no confidentiality or integrity impact reported. The vulnerability could be exploited remotely without authentication but requires high attack complexity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround is currently documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-07-24T02:23:15.607Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a860605acd9273b49871aa0
Added to database: 08/19/2026, 19:37:41 UTC
Last enriched: 08/19/2026, 19:56:06 UTC
Last updated: 10/04/2026, 10:02:25 UTC
Views: 48
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