{"id":"CVE-2026-12155","aliases":["EUVD-2026-104469","GHSA-r44r-j5xw-wgw7"],"status":"published","title":"IBM MQ Deserialization of Untrusted Data","description":"IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00259,"percentile":0.17685,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-10-19T16:40:44Z","modified":"2026-10-23T21:01:38Z","products":[{"vendor":"ibm","product":"mq advanced container images"},{"vendor":"ibm","product":"mq operator"},{"vendor":"ibm","product":"mq_operator"},{"vendor":"ibm","product":"supplied_mq_advanced_container_images"}],"references":[{"url":"https://www.ibm.com/support/pages/node/7292667","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12155"},{"url":"https://github.com/advisories/GHSA-r44r-j5xw-wgw7"}],"sources":{"cve":[{"id":"CVE-2026-12155","title":"IBM MQ Deserialization of Untrusted Data","description":"IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.","status":"published","published":"2026-10-19T16:40:44.471Z","modified":"2026-10-19T18:25:50.095Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:19:48.461833Z"}],"euvd":[{"id":"EUVD-2026-104469","description":"IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.","status":"published","published":"2026-10-19T16:40:44Z","modified":"2026-10-19T18:25:50Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T16:59:49.594293Z"}],"ghsa":[{"id":"GHSA-r44r-j5xw-wgw7","title":"IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially...","description":"IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.","status":"published","published":"2026-10-19T18:32:15Z","modified":"2026-10-19T18:32:21Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:13:58.199856Z"}],"nvd":[{"id":"CVE-2026-12155","description":"IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.","status":"published","published":"2026-10-19T17:17:17.447Z","modified":"2026-10-23T21:01:38.053Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:13:00.83844Z"}]}}