Is CVE-2026-18671 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18671?

CVE-2026-18671 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-18671

Description

IBM i 7.6, 7.5, 7.4, and 7.3 could allow an authenticated attacker to force a NetServer server thread exception, caused by an integer overflow during bounds checking in request processing. The attacker could exploit this vulnerability to cause a temporary denial of service.