EUVD-2026-75759

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands on Db2 clients due to a stack-based buffer overflow that improperly copies user-controlled data into a fixed-size stack...

CVE-2026-86093 IBM® Db2® federated server could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands under certain conditions

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 could allow an attacker with the ability to control or impersonate a DRDA server endpoint to execute arbitrary commands on Db2 clients due to a stack-based buffer overflow that improperly copies user-controlled data into a fixed-size stack...

CVE-2026-86093

IBM Db2 versions 11.5.0–11.5.9 and 12.1.0–12.1.5 (Client, Server, and Db2 Connect editions, all platforms) are affected by a stack-based buffer overflow (CWE-121) in the DRDA server endpoint handling. An attacker who can control or impersonate a DRDA server endpoint can copy user-controlled data ...