Buffer overflow in IBM I
CVE-2026-18102
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to overwrite adjacent memory due to an integer underflow during bounds checking.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N.
Affected products
- Ibm I — versions 7.3, 7.4, 7.5
Weakness classification (CWE)
References
- psirt@us.ibm.com (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-18102?
- CVE-2026-18102 is a low-severity vulnerability in IBM I, classified under Heap-based Buffer Overflow. CVSS score: 3.5/10. Published 2026-08-19.
- How severe is CVE-2026-18102?
- Low severity. CVSS v3 base score is 3.5 out of 10.