{"id":"CVE-2026-17073","title":"IBM i is Affected By Improper Authorization and Access Control Vulnerabilities in Network File System","summary":"IBM i 7.3, 7.4, 7.5, and 7.6 could allow a local attacker to obtain sensitive information due to missing subtree checks during file handle resolution.","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-284"],"vendor":"IBM","product":"i","affected":["i 7.6","i 7.5","i 7.4","i 7.3"],"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T18:39:33.190Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-17073","references":[{"url":"https://www.ibm.com/support/pages/node/7292423"}],"tags":["cve.org"],"ingestedAt":"2026-10-16T19:46:24.439Z","slug":"CVE-2026-17073","body":"## Overview\n\nIBM i 7.3, 7.4, 7.5, and 7.6 could allow a local attacker to obtain sensitive information due to missing subtree checks during file handle resolution.\n\n## Affected\n\n- `i 7.6`\n- `i 7.5`\n- `i 7.4`\n- `i 7.3`\n\n## Remediation\n\nApplication of the PTFs require additional actions that if not taken will cause existing NFS mounts to become inaccessible. View each PTF's cover letter for the additional actions required prior to installation.\n\nIBM i Release5770-SS1 \nPTF Number(s)PTF Download Link(s)7.6SJ11753 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11753 7.5SJ11790 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11790 7.4SJ11802 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11802 7.3SJ11804 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11804 \n\n\n\nIBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}