{"id":"CVE-2025-12771","title":"IBM Concert 1.0.0 through 2.1.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking","summary":"IBM Concert 1.0.0 through 2.1.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-119"],"vendor":"ibm","product":"concert","affected":["concert >= 1.0.0, < 2.2.0"],"patched":["concert 2.2.0"],"published":"2025-12-26","updated":"2026-10-06","sourceUpdated":"2026-10-06T08:10:00.193","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-12771","references":[{"url":"https://www.ibm.com/support/pages/node/7255549","label":"psirt@us.ibm.com"}],"tags":["nvd"],"epss":0.00163,"epssPercentile":0.04977,"ingestedAt":"2026-10-06T08:50:17.382Z","slug":"CVE-2025-12771","body":"## Overview\n\nIBM Concert 1.0.0 through 2.1.0 is vulnerable to a stack-based buffer overflow, caused by improper bounds checking. A local user could overflow the buffer and execute arbitrary code on the system.\n\n## Affected\n\n- `concert >= 1.0.0, < 2.2.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `concert 2.2.0`","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}