Paper/Archive/CVE-2026-18221

CVE-2026-18221

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

CVSS 9.8 (NVD)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 49.6.496 × 209.9 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

i7.6–CNA

i7.5–CNA

i7.4–CNA

i7.3–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

ibm (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchibm.com/support/pages/node/7286186