CVE-2026-17259

CVE-2026-17259

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

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

psirt@us.ibm.com

Frequently asked questions

What is CVE-2026-17259?: CVE-2026-17259 is a medium-severity vulnerability, classified under Stack-based Buffer Overflow. CVSS score: 4.3/10. Published 2026-09-04.
How severe is CVE-2026-17259?: Medium severity. CVSS v3 base score is 4.3 out of 10.