{"id":"CVE-2026-16872","title":"IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a stack-based buffer overflow.","summary":"IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a stack-based buffer overflow.","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-121"],"vendor":"ibm","product":"vios","affected":["vios >= 4.1.0, < 4.1.0.50","vios >= 4.1.1.0, < 4.1.1.30","vios >= 4.1.2.0, < 4.1.2.20","aix >= 7.2.5, <= 7.2.5.212","aix >= 7.3.2, <= 7.3.2.5","aix >= 7.3.3, <= 7.3.3.2","aix >= 7.3.4, <= 7.3.4.1"],"patched":["vios 4.1.2.20"],"published":"2026-08-19","updated":"2026-08-22","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-16872","references":[{"url":"https://www.ibm.com/support/pages/node/7283858","label":"psirt@us.ibm.com"}],"tags":["nvd"],"epss":0.00465,"epssPercentile":0.39506,"ingestedAt":"2026-08-23T03:41:35.172Z","slug":"CVE-2026-16872","body":"## Overview\n\nIBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a stack-based buffer overflow.\n\n## Affected\n\n- `vios >= 4.1.0, < 4.1.0.50`\n- `vios >= 4.1.1.0, < 4.1.1.30`\n- `vios >= 4.1.2.0, < 4.1.2.20`\n- `aix >= 7.2.5, <= 7.2.5.212`\n- `aix >= 7.3.2, <= 7.3.2.5`\n- `aix >= 7.3.3, <= 7.3.3.2`\n- `aix >= 7.3.4, <= 7.3.4.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `vios 4.1.2.20`","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}