CVE-2026-16868

Undergoing Analysis Undergoing Analysis - In Progress

Denial of Service in IBM i via ASN.1 Length Processing

Publication date: 2026-08-13

Last updated on: 2026-08-13

Assigner: IBM Corporation

Description

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to the use of uninitialized memory during ASN.1 length processing.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-13

Last Modified

2026-08-13

Generated

2026-08-14

AI Q&A

2026-08-14

EPSS Evaluated

N/A

NVD

CVE-2026-16868

EUVD

EUVD-2026-58374

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	ibm_i	7.3
ibm	ibm_i	7.4
ibm	ibm_i	7.5
ibm	ibm_i	7.6
ibm	ibm_i	From 7.3 (inc)
ibm	ibm_i	From 7.4 (inc)
ibm	ibm_i	From 7.5 (inc)
ibm	ibm_i	From 7.6 (inc)

Helpful Resources

Exploitability

CWE

KEV

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

Attack-Flow Graph

Executive Summary

IBM i versions 7.6, 7.5, 7.4, and 7.3 are vulnerable to a denial of service attack due to uninitialized memory being used during ASN.1 length processing. This flaw allows a remote attacker to cause system disruptions.

Impact Analysis

This vulnerability can lead to system crashes or service disruptions, potentially causing downtime for affected IBM i systems. It may also allow attackers to execute arbitrary code or gain unauthorized access.

Mitigation Strategies

Apply the latest IBM i PTFs or updates provided by IBM to address the uninitialized memory issue during ASN.1 length processing. Monitor IBM security advisories for patches and test updates in a non-production environment before deployment.

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