CVE-2026-6721
Critical
Description
IBM Concert 1.0.0 through 3.0.0 allows an unauthenticated remote attacker can supply specially crafted input that is incorporated into OS commands, resulting in arbitrary command execution on the underlying system. Successful exploitation allows remote code execution with the privileges of the affected application.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Ibm Concert
PublishedSep 23, 2026
First seenSep 23, 2026
Weakness typeCWE-78OS command injection
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ibm concert | 1.0.0 ≤ v ≤ 3.0.0 | — |
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