CVE-2026-18671

CVE-2026-18671 affects IBM i releases 7.3–7.6. An authenticated attacker can trigger a NetServer thread exception due to an integer overflow during bounds checking in request processing, causing a temporary denial of service. Affected products: IBM i 7.3, 7.4, 7.5, 7.6. The IBM Security Bulletin ...

CVE-2026-18511 IBM i is Affected By Multiple Vulnerabilities in Java Secure Sockets Extension

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to generate a stack-based buffer overflow in the Native IBM i JSSE provider, caused by improper bounds checking during TLS session establishment. A local attacker could overflow a fixed-length buffer and execute arbitrary cod...

CVE-2026-18511 IBM i is Affected By Multiple Vulnerabilities in Java Secure Sockets Extension

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to generate a stack-based buffer overflow in the Native IBM i JSSE provider, caused by improper bounds checking during TLS session establishment. A local attacker could overflow a fixed-length buffer and execute arbitrary cod...

EUVD-2026-58470

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to generate a stack-based buffer overflow in the Native IBM i JSSE provider, caused by improper bounds checking during TLS session establishment. A local attacker could overflow a fixed-length buffer and execute arbitrary cod...

CVE-2026-18511

IBM i 7.3–7.6 is affected by CVE-2026-18511. The vulnerability arises in the Native IBM i JSSE provider during TLS session establishment due to improper bounds checking, allowing a local authenticated attacker to overflow a fixed-length buffer and potentially execute arbitrary code or crash the J...

CVE-2026-18509

CVE-2026-18509 affects IBM i 7.3–7.6 (5770-SS1). The vulnerability enables a local authenticated attacker to escalate privileges via the Navigator for i debugger, potentially allowing access to or manipulation of sensitive data or creation of elevated user profiles. Root cause aligns with imprope...

EUVD-2026-58469

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to gain privilege escalation via the Navigator for i debugger. This could allow the attacker to access or manipulate sensitive data on the system, or create new profiles with elevated privileges on the IBM i system...

CVE-2026-18509 IBM i is Affected By A Prvilege Escalation Vulnerability []

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local authenticated attacker to gain privilege escalation via the Navigator for i debugger. This could allow the attacker to access or manipulate sensitive data on the system, or create new profiles with elevated privileges on the IBM i system...

CVE-2026-18249 IBM i Is Affected By Multiple Vulnerabilities in IBM Java SDK and IBM Java Runtime

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to gain elevated privileges due to improper validation of pointers read from Java-controlled addresses...

EUVD-2026-58468

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to gain elevated privileges due to improper validation of pointers read from Java-controlled addresses...

CVE-2026-18249

IBM i 7.3–7.6 is vulnerable to privilege escalation via improper pointer validation from Java-controlled addresses (CWE-269), requiring a remote authenticated attacker with low privileges. IBM provides PTFs for all affected releases (e.g., SJ11037 for 7.6); no workarounds are available. No exploi...

CVE-2026-18193

CVE-2026-18193 affects IBM i versions 7.3, 7.4, 7.5, and 7.6, specifically the IBM SDK Java Technology Edition and IBM Runtime Environment Java components. The root cause is improper validation of user-controlled addresses (CWE-269: Improper Privilege Management), allowing a remote attacker to by...

CVE-2026-18193 IBM i Is Affected By Multiple Vulnerabilities in IBM Java SDK and IBM Java Runtime

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to bypass security restrictions due to improper validation of user-controlled addresses...

EUVD-2026-58467

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to bypass security restrictions due to improper validation of user-controlled addresses...

EUVD-2026-58466

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to gain elevated privileges due to improper management of thread authority swaps...

CVE-2026-18101 IBM i is Affected By Multiple Vulnerabilities in WebSphere Application Server Liberty

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to gain elevated privileges due to improper management of thread authority swaps...

CVE-2026-18101

CVE-2026-18101 affects IBM i 7.6, 7.5, 7.4 and 7.3 in the WebSphere Application Server Liberty stack. The issue is a local privilege escalation caused by improper management of thread authority swaps, with a CVSS v3.1 base score of 8.8 (LOCAL, LOW attack complexity, no user interaction; privilege...

CVE-2026-18086 IBM i is Affected By Multiple Vulnerabilities in Java Secure Sockets Extension

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to execute arbitrary code or cause a denial of service due to improper bounds checking...

CVE-2026-18086 IBM i is Affected By Multiple Vulnerabilities in Java Secure Sockets Extension

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a local attacker to execute arbitrary code or cause a denial of service due to improper bounds checking...

CVE-2026-18086

IBM i 7.3–7.6 is affected by CVE-2026-18086 in Java Secure Sockets Extension where improper bounds checking could allow a local attacker to execute arbitrary code or cause a denial of service. The NVD/NVD IBM bulletin describe the root cause as bounds-checking issues in JSSE, with a base CVSS v3....