Vulnerability in IBM I

CVE-2026-18069

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to obtain ownership of arbitrary file system objects due to a time-of-check to time-of-use (TOCTOU) race condition.

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L.

Affected products

  • Ibm I — versions 7.3, 7.4, 7.5

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-18069?
CVE-2026-18069 is a medium-severity vulnerability in IBM I, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 6.0/10. Published 2026-09-14.
How severe is CVE-2026-18069?
Medium severity. CVSS v3 base score is 6.0 out of 10.