Is CVE-2026-12155 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-12155?

CVE-2026-12155 has a CVSS v3 severity of MEDIUM (6.5).

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CVE-2026-12155

Description

IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.