CVE-2026-18221CWE-287

CVE-2026-18221

High · published September 4, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
26.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00339 · 26.1th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-09-04T21:16Z
Affected products (4)
ProductVersionsFixed in
ibm/iall versions—
ibm/iall versions—
ibm/iall versions—
ibm/iall versions—
References (1)
https://www.ibm.com/support/pages/node/7286186 · [email protected]
EPSS history
Timeline
  • 06 SEP 03:30Z
    EPSS moved — → 0%
    epss
  • 04 SEP 16:25Z
    IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DRDA [, ]
    cvelistv5