Buffer overflow in Ibm I

CVE-2026-17272

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to a buffer overflow.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.

Affected products

Ibm I — versions 7.6, 7.5, 7.4

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

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

Frequently asked questions

What is CVE-2026-17272?: CVE-2026-17272 is a high-severity vulnerability in Ibm I, classified under Out-of-bounds Write. CVSS score: 8.2/10. Published 2026-08-13.
How severe is CVE-2026-17272?: High severity. CVSS v3 base score is 8.2 out of 10.