{"id":"CVE-2026-10858","title":"IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer underflow when processing multi-segment messages.","summary":"IBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer underflow when processing multi-segment messages.","severity":"critical","cvss":9.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-122"],"vendor":"IBM","product":"MQ for HPE NonStop","affected":["mq_for_hpe_nonstop >= 8.1.0 <= 8.1.0.40"],"published":"2026-09-18","updated":"2026-09-19","sourceUpdated":"2026-09-19T04:17:51.203","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-10858","references":[{"url":"https://www.ibm.com/support/pages/node/7287704","label":"psirt@us.ibm.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-18T17:28:46.938518Z"},"ingestedAt":"2026-09-18T16:45:41.381Z","epss":0.00328,"epssPercentile":0.26089,"slug":"CVE-2026-10858","body":"## Overview\n\nIBM MQ for HPE NonStop 8.1.0 through 8.1.0.40 could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer underflow when processing multi-segment messages.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":54.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}