CVE-2026-16956
Remote OS command injection in IBM Db2 Mirror for i permitting arbitrary commands.
Is CVE-2026-16956 being exploited?
Not confirmed. CVE-2026-16956 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 1.0% probability of exploitation in the next 30 days.
How severe is CVE-2026-16956?
CVE-2026-16956 is rated Critical with a CVSS score of 9.8. 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-2026-16956?
Yes. A fix has been recorded for CVE-2026-16956. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-16956 affect?
CVE-2026-16956 affects IBM Db2 Mirror for i 7.4, IBM Db2 Mirror for i 7.5, IBM Db2 Mirror for i 7.6. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-16956?
Apply vendor patch when released; restrict/segment service access and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can execute OS commands via the DB2 Mirror service, enabling system compromise, data access, and lateral movement.
Immediate action required
- affected7.4
- affected7.5
- affected7.6
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.