CVE-2026-6730

Critical

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.

SeverityCritical
CVSS9.8
Exploit probability—
ProductIbm Concert
PublishedSep 23, 2026
First seenSep 23, 2026
Weakness typeCWE-120CWE-120

How to fix

Affected products

ProductAffected versionsFixed in
ibm concert1.0.0 ≤ v ≤ 3.0.0—

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