Is CVE-2026-18020 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18020?

CVE-2026-18020 has a CVSS v3 severity of MEDIUM (5.3).

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Description

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 off-by-one error in bounds checking.