Remote Code Execution Vulnerability in IBM Concert Software
CVE-2026-6721

9.8CRITICAL

Key Information:

Vendor

IBM
Status
Concert
Vendor
CVE Published:
23 September 2026

What is CVE-2026-6721?

IBM Concert versions 1.0.0 through 3.0.0 contain a vulnerability that allows unauthenticated remote attackers to execute arbitrary commands on the underlying system. By supplying specially crafted input, attackers can manipulate OS commands, leading to unauthorized remote code execution with the privileges of the affected application. This poses a significant security risk, as it may allow attackers to gain control over the affected system and perform malicious actions without authentication.

Affected Version(s)

Concert 1.0.0 <= 3.0.0

References

https://www.ibm.com/support/pages/node/7288830
vendor-advisorypatch

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.