AI and data stack advisories

Severe, 6 weeks1498Projects326

1498 severe, 6 weeks · 326 projects

IBMCVE-2026-18511

IBM i: stack buffer overflow

IBM

CVE-2026-18511 · Published Aug 13, 2026 · updated Aug 17, 2026

High7.3
No fix yet
IBM advisory

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 versions

PackageAffectedFixed in
i
Product
<= 7.6No fix yet
<= 7.5No fix yet
<= 7.4No fix yet
<= 7.3No fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-787

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