CVE-2026-16837

Analyzed Analyzed - Analysis Complete

Denial of Service in IBM AIX and PowerVM VIOS

Publication date: 2026-08-19

Last updated on: 2026-08-24

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 improper handling of a missing SSL client certificate.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-19

Last Modified

2026-08-24

Generated

2026-09-09

AI Q&A

2026-08-19

EPSS Evaluated

2026-09-07

NVD

CVE-2026-16837

EUVD

EUVD-2026-62726

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	aix	From 7.2.5 (inc) to 7.2.5.212 (inc)
ibm	aix	From 7.3.2 (inc) to 7.3.2.5 (inc)
ibm	aix	From 7.3.3 (inc) to 7.3.3.2 (inc)
ibm	aix	From 7.3.4 (inc) to 7.3.4.1 (inc)
ibm	vios	From 4.1.0 (inc) to 4.1.0.50 (exc)
ibm	vios	From 4.1.1.0 (inc) to 4.1.1.30 (exc)
ibm	vios	From 4.1.2.0 (inc) to 4.1.2.20 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

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 improper handling of a missing SSL client certificate.

Detection Guidance

This vulnerability involves improper handling of missing SSL client certificates in IBM AIX and PowerVM VIOS systems. Detection requires checking SSL/TLS configurations and certificate validation processes on affected systems. Review IBM AIX and PowerVM VIOS documentation for SSL/TLS settings and certificate requirements. Monitor network traffic for failed SSL handshakes or certificate errors.

Impact Analysis

The vulnerability can lead to system unavailability due to a denial of service, potentially disrupting services relying on SSL/TLS connections.

Compliance Impact

This vulnerability could lead to a denial of service due to improper SSL client certificate handling, potentially disrupting services that handle sensitive data. This may impact compliance with GDPR by affecting availability of personal data processing systems and HIPAA by disrupting healthcare services that rely on continuous access to patient data.

Mitigation Strategies

Apply IBM AIX and PowerVM VIOS security patches or updates as soon as they become available to address the improper SSL client certificate handling issue.

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