{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6721", "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "state": "PUBLISHED", "assignerShortName": "ibm", "dateReserved": "2026-04-20T19:32:11.770Z", "datePublished": "2026-09-23T20:45:38.287Z", "dateUpdated": "2026-09-23T20:45:38.287Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522", "shortName": "ibm", "dateUpdated": "2026-09-23T20:45:38.287Z"}, "title": "Multiple Vulnerabilities in IBM Concert Software", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-78", "description": "CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}], "affected": [{"vendor": "IBM", "product": "Concert", "versions": [{"status": "affected", "version": "1.0.0", "lessThanOrEqual": "3.0.0", "versionType": "semver"}], "cpes": ["cpe:2.3:a:ibm:concert:1.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:concert:3.0.0:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>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.</p>"}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7288830", "tags": ["vendor-advisory", "patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "CRITICAL", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}}], "solutions": [{"lang": "en", "value": "IBM strongly recommends addressing the vulnerability now by upgrading to IBM Concert Software 3.0.1.1\n\n\n\nDownload IBM Concert Software 3.0.0 from Container software library section of IBM Entitled Registry ( ICR https://myibm.ibm.com/products-services/containerlibrary ) and follow\u00a0 installation instructions https://www.ibm.com/docs/en/concert \u00a0depending on the type of deployment.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>IBM strongly recommends addressing the vulnerability now by upgrading to IBM Concert Software 3.0.1.1</p><p>Download IBM Concert Software 3.0.0 from Container software library section of IBM Entitled Registry (<a href=\"https://myibm.ibm.com/products-services/containerlibrary\" rel=\"noopener noreferrer nofollow\">ICR</a>) and follow\u00a0<a href=\"https://www.ibm.com/docs/en/concert?topic=installing-preparing-run-installs-from-private-container-registry\" rel=\"noopener noreferrer nofollow\">installation instructions</a>\u00a0depending on the type of deployment.</p>"}]}]}}}

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{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:ibm:concert:1.0.0:*:*:*:*:*:*:*", "cpe:2.3:a:ibm:concert:3.0.0:*:*:*:*:*:*:*"], "product": "Concert", "vendor": "IBM", "versions": [{"lessThanOrEqual": "3.0.0", "status": "affected", "version": "1.0.0", "versionType": "semver"}]}], "source": "psirt@us.ibm.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-6721", "lastModified": "2026-09-23T21:17:01.927", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "psirt@us.ibm.com", "type": "Primary"}]}, "published": "2026-09-23T21:17:01.927", "references": [{"source": "psirt@us.ibm.com", "url": "https://www.ibm.com/support/pages/node/7288830"}], "sourceIdentifier": "psirt@us.ibm.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "psirt@us.ibm.com", "type": "Primary"}]}

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