What is CVE-2026-16967?

CVE-2026-16967 is a high-severity vulnerability in Ibm I, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 8.5/10. Published 2026-08-13.

How severe is CVE-2026-16967?

High severity. CVSS v3 base score is 8.5 out of 10.

Vulnerability in Ibm I

CVE-2026-16967

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to gain unauthorized access to system objects due to a time-of-check to time-of-use (TOCTOU) race condition involving symbolic links.

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

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Ibm I — versions 7.6, 7.5, 7.4

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

References

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

Frequently asked questions

What is CVE-2026-16967?: CVE-2026-16967 is a high-severity vulnerability in Ibm I, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 8.5/10. Published 2026-08-13.
How severe is CVE-2026-16967?: High severity. CVSS v3 base score is 8.5 out of 10.