Description
IBM Power Systems Firmware FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the host firmware boot process image validation path. An attacker with service access to the service processor can supply a maliciously crafted code update image, allowing arbitrary code to be executed on the host system. Successful exploitation could result in a confidentiality, integrity, and availability impact to the affected host system.
Published: 2026-10-12
Score: 8.2 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

A stack‑based buffer overflow (CWE‑121) occurs in the host firmware boot process image validation path of IBM PowerVM Hypervisor firmware. An attacker able to access the service processor can supply a maliciously crafted update image, leading to arbitrary code execution on the underlying host. This flaw can compromise confidentiality, integrity, and availability of the affected system.

Affected Systems

IBM PowerVM Hypervisor firmware versions FW1060.00 through FW1060.81, FW1110.00 through FW1110.31, and FW1120.00 through FW1120.01 are vulnerable. Impacted Power System models include the Power 10 and Power 11 machines listed in the advisory, such as E1080, S1022, S1024, E1050, S1012, S1112, S1122, L1122, E1180, S1124, L1124, S1114, E1150, and others.

Risk and Exploitability

The vulnerability carries a CVSS score of 8.2 and is not listed in CISA KEV. EPSS information is unavailable, indicating no current quantitative exploitation probability. The flaw requires service‑processor access; based on the description, it is inferred that an attacker must control the service processor to submit a malicious firmware image. If successful, arbitrary code execution on the host is possible, allowing full compromise of confidentiality, integrity, and availability on the affected PowerVM system.

Generated by OpenCVE AI on October 12, 2026 at 23:31 UTC.

Remediation

Vendor Solution

Customers with the products below should install FW1110.32(1110_138), FW1120.02(1120_171), or newer to remediate this vulnerability. Power 11 * IBM Power System E1180 (9080-HEU) Customers with the products below should install FW1110.32(1110_160), FW1120.02(1120_195), or newer to remediate this vulnerability. Power 11 * IBM Power System S1122 (9824-22A) * IBM Power System S1124 (9824-42A) * IBM Power System S1122s (9824-22B) * IBM Power System S1114 (9824-41B) * IBM Power System L1122 (9856-22H) * IBM Power System L1124 (9856-42H) * IBM Power System E1150 (9043-MRU) Customers with the products below should install FW1120.02(1120_195), or newer to remediate this vulnerability. Power 11 * IBM Power System S1112 (9242-21B, 9242-21T) Customers with the products below should install FW1060.82(1060_189), or newer to remediate this vulnerability. Power 10 * IBM Power System E1080 (9080-HEX) Customers with the products below should install  FW1060.82(1060_199), or newer to remediate this vulnerability. Power 10 * IBM Power System S1022 (9105-22A) * IBM Power System S1024 (9105-42A) * IBM Power System S1022s (9105-22B) * IBM Power System S1014 (9105-41B) * IBM Power System L1022 (9786-22H) * IBM Power System L1024 (9786-42H) * IBM Power System E1050 (9043-MRX) * IBM Power System S1012 (9028-21B) The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/ https://www.ibm.com/support/fixcentral/

Vendor Workaround

NOTE: If performing a concurrent upgrade you must reboot the system after updating to the new firmware level to mitigate this CVE

OpenCVE Recommended Actions

  • Upgrade the PowerVM hypervisor firmware to any of the recommended patched versions—FW1110.32 (1110_160) or newer, FW1120.02 (1120_195) or newer, or FW1060.82 (1060_189) or newer—depending on the specific Power System model in use.
  • If performing a concurrent upgrade, reboot the system immediately after installing the new firmware to fully apply the mitigation for this CVE.
  • Restrict or disable service‑processor access to prevent unauthorized firmware image uploads; ensure that only highly trusted administrators can push firmware updates and audit all firmware update operations.

Generated by OpenCVE AI on October 12, 2026 at 23:31 UTC.

Tracking

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Advisories

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History

Tue, 13 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 12 Oct 2026 21:00:00 +0000

Type Values Removed Values Added
Description IBM Power Systems Firmware FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the host firmware boot process image validation path. An attacker with service access to the service processor can supply a maliciously crafted code update image, allowing arbitrary code to be executed on the host system. Successful exploitation could result in a confidentiality, integrity, and availability impact to the affected host system.
Title IBM Power Systems Firmware Buffer Overflow
First Time appeared Ibm
Ibm powervm Hypervisor
Weaknesses CWE-121
CPEs cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm powervm Hypervisor
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Subscriptions

Ibm Powervm Hypervisor
cve-icon MITRE

Status: PUBLISHED

Assigner: ibm

Published:

Updated: 2026-10-13T11:57:49.528Z

Reserved: 2026-09-22T20:14:24.422Z

Link: CVE-2026-96263

cve-icon Vulnrichment

Updated: 2026-10-13T11:52:00.627Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-12T21:17:23.893

Modified: 2026-10-13T16:17:14.080

Link: CVE-2026-96263

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-13T05:15:17Z

Weaknesses
  • CWE-121

    Stack-based Buffer Overflow