CVE-2026-18221 PUBLISHED

IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DRDA [, ]

Assigner: ibm
Reserved: 29.07.2026 Published: 04.09.2026 Updated: 04.09.2026

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to gain unauthorized access due to improper validation of client-supplied authentication parameters.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.1

Product Status

Vendor IBM
Product i
Versions
  • Version 7.6 is affected
  • Version 7.5 is affected
  • Version 7.4 is affected
  • Version 7.3 is affected

Solutions

IBM i Release5770-SS1  PTF Number(s)PTF Download Link(s)7.6SJ11231 SJ11230 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11231 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11230 7.5SJ11232 SJ11233 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11232 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11233 7.4SJ11262 SJ11261 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11262 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11261 7.3SJ11234 SJ11235 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11234 https://www.ibm.com/mysupport/s/fix-information?legacy=SJ11235

IBM recommends users running unsupported versions of affected products upgrade to a supported and fixed version of affected products.

References

Problem Types

  • CWE-287 Improper Authentication CWE