CVE-2026-16879
Auth bypass in IBM Db2 Mirror for i allows authenticated users to perform unauthorized actions
Is CVE-2026-16879 being exploited?
Not confirmed. CVE-2026-16879 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 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-16879?
CVE-2026-16879 is rated High with a CVSS score of 8.8. 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-2026-16879?
Yes. A fix has been recorded for CVE-2026-16879. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-16879 affect?
CVE-2026-16879 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-2026-16879?
Restrict access to Db2 management, monitor logs, apply vendor patches/mitigations when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attackers can bypass authorization to access/modify data, perform admin operations, or escalate privileges.
Patch when possible
- 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.