{"id":"CVE-2026-86093","title":"IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands on Db2 clients due to a stack-based buffer overflow that imp…","summary":"IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands on Db2 clients due to a stack-based buffer overflow that imp…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-121"],"vendor":"ibm","product":"db2","affected":["db2 >= 11.5, <= 11.5.9","db2 >= 12.1.0, <= 12.1.5"],"published":"2026-09-10","updated":"2026-09-14","sourceUpdated":"2026-09-14T20:10:27.400","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86093","references":[{"url":"https://www.ibm.com/support/pages/node/7286993","label":"psirt@us.ibm.com"}],"tags":["nvd","cve.org"],"epss":0.00485,"epssPercentile":0.40748,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-11T00:00:00+00:00"},"ingestedAt":"2026-09-14T15:23:07.483Z","slug":"CVE-2026-86093","body":"## Overview\n\nIBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands on Db2 clients due to a stack-based buffer overflow that improperly copies user-controlled data into a fixed-size stack buffer without bounds checking.\n\n## Affected\n\n- `db2 >= 11.5, <= 11.5.9`\n- `db2 >= 12.1.0, <= 12.1.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}