CVE-2026-6730

Received Received - Intake

Buffer Overflow in IBM Concert

Publication date: 2026-09-23

Last updated on: 2026-09-23

Assigner: IBM Corporation

Description

IBM Concert 1.0.0 through 3.0.0 is vulnerable to a buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-23

Last Modified

2026-09-23

Generated

2026-09-24

AI Q&A

2026-09-24

EPSS Evaluated

N/A

NVD

CVE-2026-6730

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	concert	From 1.0.0 (inc) to 3.0.0 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-120	The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Attack-Flow Graph

Executive Summary

IBM Concert versions 1.0.0 through 3.0.0 have a buffer overflow vulnerability due to improper bounds checking. This allows a local user to overflow the buffer and execute arbitrary code on the affected system.

Impact Analysis

An attacker with local access could exploit this to run malicious code, potentially gaining control over the system, stealing data, or causing system crashes. The high CVSS score indicates significant risk.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR (data protection) and HIPAA (health data security) requirements. Organizations must address it to maintain compliance.

Mitigation Strategies

Update IBM Concert to the latest version beyond 3.0.0 to address the buffer overflow vulnerability. Restrict local user access to prevent arbitrary code execution. Monitor system logs for unusual activity.

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