CVE-2026-16904
Authenticated remote privilege escalation in IBM i allowing arbitrary command execution.
Is CVE-2026-16904 being exploited?
Not confirmed. CVE-2026-16904 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-16904?
CVE-2026-16904 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-16904?
Yes. A fix has been recorded for CVE-2026-16904. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-16904 affect?
CVE-2026-16904 affects IBM i 7.3, IBM i 7.4, IBM i 7.5, IBM i 7.6. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-16904?
Apply vendor patch when released; restrict admin access and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated remote attacker can reassign monitor ownership to gain elevated privileges and execute arbitrary OS commands, risking system compromise and data/control loss.
Patch when possible
- affected7.6
- affected7.5
- affected7.4
- affected7.3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.