Buffer Overflow Vulnerability in IBM i Products by IBM
CVE-2026-17259

4.3MEDIUM

Key Information:

Vendor

IBM
Status
I
Vendor
CVE Published:
4 September 2026

What is CVE-2026-17259?

IBM i versions 7.6, 7.5, 7.4, and 7.3 are susceptible to a vulnerability that allows remote authenticated attackers to exploit a stack-based buffer overflow. This could lead to a denial of service, affecting the availability and performance of systems relying on these versions. Organizations are advised to implement the latest patches provided by IBM to mitigate the risks associated with this vulnerability.

Affected Version(s)

i 7.6

i 7.5

i 7.4

References

https://www.ibm.com/support/pages/node/7285844
vendor-advisorypatch

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.