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

CVE-2026-18511

IBM i is Affected By Multiple Vulnerabilities in Java Secure Sockets Extension PUBLISHED

Description (CNA)

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 code on the system or cause the JVM process to crash.

Affected (CNA)

Vendor / product	Versions
IBM / i	affected 7.6; affected 7.5; affected 7.4; affected 7.3

CWE

CWE-787

References

https://www.ibm.com/support/pages/node/7283285

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.