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Medium · 5.3 CVE-2026-115501 EUVD-2026-125811GHSA-9mcr-xq7g-3j65

IBM i is Affected By A Buffer Overflow Vulnerability in QFileSvr.400 File System []

Published Nov 13, 2026 · Updated Nov 13, 2026 · Assigned by ibm

Description

IBM i 7.3 7.4, 7.5, and 7.6 is vulnerable to a stack buffer overflow, caused by improper bounds checking in the QFileSvr.400 file system. By sending a command in the QFileSvr.400 file system, a local authenticated attacker could cause undefined behavior.

Affected products

VendorProductAffectedFixed
IBM i 7.6, 7.5, 7.4, 7.3 —

References