What is CVE-2026-17276?

CVE-2026-17276 is a critical-severity vulnerability in Ibm I, classified under Improper Privilege Management. CVSS score: 9.6/10. Published 2026-08-12.

How severe is CVE-2026-17276?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Privilege escalation in Ibm I

CVE-2026-17276

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to escalate privileges due to improper authorization in the handling of high-authority threads.

Vulnerability class: Privilege Escalation

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

Ibm I — versions 7.6, 7.5, 7.4

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

psirt@us.ibm.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-17276?: CVE-2026-17276 is a critical-severity vulnerability in Ibm I, classified under Improper Privilege Management. CVSS score: 9.6/10. Published 2026-08-12.
How severe is CVE-2026-17276?: Critical severity. CVSS v3 base score is 9.6 out of 10.