CVE-2026-11885
PowerVM hypervisor memory corruption allowing host crash or compromise.
Is CVE-2026-11885 being exploited?
Not confirmed. CVE-2026-11885 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 0.10% probability of exploitation in the next 30 days.
How severe is CVE-2026-11885?
CVE-2026-11885 is rated High with a CVSS score of 8.4. 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-2026-11885?
Yes. A fix has been recorded for CVE-2026-11885. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-11885 affect?
CVE-2026-11885 affects IBM PowerVM Hypervisor FW1110.00 - FW1110.20, IBM PowerVM Hypervisor FW1060.00 - FW1060.71, IBM PowerVM Hypervisor FW950.00 - FW950.H1, IBM Power Systems running PowerVM. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-11885?
Apply vendor firmware updates when released; isolate affected hosts and restrict guest privileges.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A malicious guest OS can trigger hypervisor memory corruption causing host crash, VM escape, privilege escalation, or host compromise.
Immediate action required
- affected>= FW1110.00 and <= FW1110.20
- affected>= FW1060.00 and <= FW1060.71
- affected>= FW950.00 and <= FW950.H1
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.