# CVE-2026-15266: Multiple Vulnerabilities in IBM Concert Software

Status: published. Published: 2026-11-08. Updated: 2026-11-08.

IBM Concert 1.0 through 3.0.1.1 contains components that allow potentially unsafe command execution, which could be exploited to run arbitrary system commands on the host.

## Remediation

- fix: IBM strongly recommends addressing these vulnerabilities now by upgrading to IBM Concert Software 3.1.0



Download IBM Concert Software 3.1.0 from Container software library section of IBM Entitled Registry ( ICR https://myibm.ibm.com/products-services/containerlibrary ) and follow  installation instructions https://www.ibm.com/docs/en/concert  depending on the type of deployment. (source: CNA: ibm)
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: ibm) — https://www.ibm.com/support/pages/node/7294607

## Affected products and versions

- IBM / Concert: ≥ 1.0; ≤ 3.0.1.1 (affected, semver). Source: CNA: ibm

## Severity and prioritization

- CVSS 3.1: 9.8 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H; source: CNA: ibm

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-78

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.ibm.com/support/pages/node/7294607 (CNA: ibm; vendor-advisory, patch)

## Provenance

- CNA: ibm: https://www.cve.org/CVERecord?id=CVE-2026-15266; retrieved 2026-11-08; source updated 2026-11-08

Revision: 5bba8d90512cbb59804af4ddfdd686e905a917b9ec88a46f62eab94f94d77d65

Canonical: https://y2.dev/cve/CVE-2026-15266

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