{"id":"CVE-2026-6721","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-6721","generatedAt":"2026-10-28T02:12:42.376Z","title":"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.","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.","published":"2026-09-23T21:17:02.000Z","lastModified":"2026-09-28T20:45:57.000Z","status":"Analyzed","sourceIdentifier":"psirt@us.ibm.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-78"],"affected":["ibm/concert"],"epss":{"score":0.01194,"percentile":0.67829,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.01449,"percentile":0.72196}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-23T21:17:02.000Z","detail":{"score":"9.8","severity":"CRITICAL","publishedAt":"2026-09-23T21:17:01.927Z"},"summary":"New CVE, critical severity (CVSS 9.8)."}],"references":[{"url":"https://www.ibm.com/support/pages/node/7288830","tags":["Vendor Advisory"],"source":"psirt@us.ibm.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-6721","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}