CVE-2023-30990

CVE-2023-30990 exploits See our blog post for details: https://blog.silentsignal.eu/2025/09/04/Exploit-development-for-IBM-i/ The Python scripts require the ebcdic module: pip install ebcdic DRDA S38CMD method python3 ddm.py "" DRDA SQL method python3 ddm-bypass-test.py "" Simple bindshell with...

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 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 ...

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...

Security Bulletin: 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 (CVE-2026-86093)

Summary IBM® Db2® federated server 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 buffer without bounds...

CVE-2026-86093: Stack-based Buffer Overflow

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...

PT-2026-89600

Name of the Vulnerable Software and Affected Versions IBM Db2 versions 11.5.0 through 11.5.9 IBM Db2 versions 12.1.0 through 12.1.5 Description A stack-based buffer overflow occurs when user-controlled data is improperly copied into a fixed-size stack buffer without bounds checking. This allows a...

CVE-2026-18221

IBM i versions 7.3 through 7.6 are vulnerable to improper authentication (CWE-287) in Distributed Data Management (DDM) / Distributed Relational Database Architecture (DRDA) . A remote attacker with no privileges or user interaction can gain unauthorized access by supplying crafted authentication...

CVE-2026-18221 IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DRDA [, ]

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to gain unauthorized access due to improper validation of client-supplied authentication parameters...

Security Bulletin: IBM i is Affected By Improper Authorization and Authentication Vulnerabilities in DDM / DRDA [CVE-2026-18175, CVE-2026-18221]

Summary IBM i is vulnerable to manipulation of database transactions due to improper authorization CVE-2026-18175 and allowing unathorized access due to improper validation CVE-2026-18221 in Distributed Data Management DDM / Distributed Relational Database Architecture DRDA as described in the...

Security Bulletin: IBM i is Affected By Multiple Vulnerabilities in Host Servers

Summary IBM i is vulnerable to multiple vulnerabilities CVE-2026-17223, CVE-2026-17206, CVE-2026-17208, CVE-2026-16929, CVE-2026-17004, CVE-2026-18846, CVE-2026-17197, CVE-2026-17217, CVE-2026-17199, CVE-2026-17229, CVE-2026-16982 in host servers, and a buffer overflow CVE-2026-17220 in host,...

CVE-2026-17216

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to an integer error when processing DRDA large-object headers...

CVE-2026-17076

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to improper processing of DRDA and DDM resynchronization requests...

CVE-2026-17216 IBM i is Affected By Multiple Vulnerabilities in DRDA / DDM

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to an integer error when processing DRDA large-object headers...

CVE-2026-17216

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to an integer error when processing DRDA large-object headers...

EUVD-2026-58402

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to an integer error when processing DRDA large-object headers...

CVE-2026-17216

CVE-2026-17216 affects IBM i 7.6, 7.5, 7.4, and 7.3. A remote attacker could cause a denial of service due to an integer error when processing DRDA large-object headers. The CVSS v3.1 base score is 5.3 (Medium) with network attack vector, no user interaction required, and availability impact desc...

CVE-2026-17078

CVE-2026-17078 affects IBM i releases 7.6, 7.5, 7.4, and 7.3 (5770-SS1) due to a denial of service from resource exhaustion in DRDA / DDM. The vulnerability is remote and can be triggered without user interaction. Affected versions have published fixes via PTFs SJ10836 (7.6), SJ10837 (7.5), SJ108...