CVE-2026-16827
Received Received - Intake

Denial of Service in IBM AIX and PowerVM VIOS

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: IBM Corporation

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.

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Meta Information

Published
2026-08-19
Last Modified
2026-08-19
Generated
2026-08-20
AI Q&A
2026-08-19
EPSS Evaluated
N/A
NVD
CVE-2026-16827
EUVD
EUVD-2026-62713

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
ibm aix From 7.2 (inc)
ibm aix From 7.3 (inc)
ibm powervm_vios From 4.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-908 The product uses or accesses a resource that has not been initialized.

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Executive Summary

This vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 allows a remote attacker to cause a denial of service by exploiting an uninitialized stack pointer. This means the system may crash or become unresponsive due to improper memory handling.

Impact Analysis

If exploited, this vulnerability could lead to system crashes or service disruptions, causing downtime for affected IBM AIX or PowerVM VIOS systems. It may require restarting services or rebooting systems to restore normal operation.

Compliance Impact

This vulnerability could impact compliance by causing service disruptions or data unavailability, potentially violating availability requirements in GDPR or HIPAA. Downtime may lead to breaches of service level agreements or regulatory obligations.

Mitigation Strategies

Apply IBM-provided patches or updates for AIX 7.2, 7.3, and PowerVM VIOS 4.1 to address the uninitialized stack pointer issue. Monitor IBM security advisories for fixes and test patches in a non-production environment before deployment.

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