CVE-2026-11885: Power System update in Buffer Copy

Published Jul 21, 2026
·
Updated

A carefully crafted OS hypervisor call can cause the PowerVM hypervisor to crash or compromise OS memory integrity.

Affected Software

4 affected components
IBM PowerVM Hypervisor>=FW1110.00<=FW1110.20, >=FW1060.00<=FW1060.71, >=FW950.00<=FW950.H1
IBM PowerVM Hypervisor<=FW1110.00 - FW1110.20
IBM PowerVM Hypervisor<=FW1060.00 - FW1060.71
IBM PowerVM Hypervisor<=FW950.00 - FW950.H1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade IBM PowerVM Hypervisor firmware to a version that resolves this vulnerability.

    Patch FW1060.72(1060_171)
  2. Upgrade

    Upgrade IBM PowerVM Hypervisor firmware to a version that resolves this vulnerability.

    Patch FW1060.80(1060_180)
  3. Upgrade

    Upgrade IBM PowerVM Hypervisor firmware to a version that resolves this vulnerability.

    Patch FW1110.30(1110_125)
  4. Upgrade

    Upgrade IBM PowerVM Hypervisor firmware to a version that resolves this vulnerability.

    Patch FW1110.30(1110_145)
  5. Upgrade

    Upgrade IBM PowerVM Hypervisor firmware to a version that resolves this vulnerability.

    Patch FW950.H2(950_222)
  6. Upgrade

    Upgrade IBM PowerVM Hypervisor firmware to a version that resolves this vulnerability.

    Patch FW1060.72(1060_177)
  7. Upgrade

    Upgrade IBM PowerVM Hypervisor firmware to a version that resolves this vulnerability.

    Patch FW1060.80(1060_185)

Event History

Jul 21, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Jul 30, 2026
CVE Published
via MITRE·04:38 PM
Data Sourced
via MITRE·04:38 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·05:16 PM
DescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-11885?

CVE-2026-11885 has a severity score of 8.4, indicating a high level of risk.

2

What vulnerabilities are addressed by CVE-2026-11885?

CVE-2026-11885 addresses a vulnerability in the IBM PowerVM hypervisor that can lead to a crash or compromise of OS memory integrity.

3

How can I mitigate the risks associated with CVE-2026-11885?

To mitigate the risks of CVE-2026-11885, ensure that you update to the latest firmware versions of the IBM PowerVM Hypervisor.

4

What are the affected versions in CVE-2026-11885?

CVE-2026-11885 affects IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H1.

5

Is there a workaround for CVE-2026-11885 before applying a fix?

Currently, there are no known effective workarounds for CVE-2026-11885, so updating to the latest version is recommended.

Company

Resources

Contact

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