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TI-2026-71328 Aliases CVE-2026-96263GHSA-7x99-v7wf-cwv4

Buffer overflow in IBM Power Systems firmware boot image validation

Priority LOW 36CWE-121Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

IBM Power Systems Firmware FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected. A stack-based buffer overflow (CWE-121) in the host firmware boot process image validation path lets a crafted code update image overwrite memory. An attacker with service access to the service processor can execute arbitrary code on the host system, with high impact to confidentiality, integrity and availability.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00123 2nd percentileScored 2026-11-08
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
IBMPowerVM HypervisorFW1120.00 – FW1120.01; FW1110.00 – FW1110.31; FW1060.00 – FW1060.81—No fix listedCNA
  • PowerVM Hypervisor VendorIBM Affected FW1120.00 – FW1120.01; FW1110.00 – FW1110.31; FW1060.00 – FW1060.81 Fixed in — No fix listed CNA

CPE names CNA · 12

CPEVersionsRoleVendor
cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:*fw1120.00—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00.0:*:*:*:*:*:*:*fw1120.00.0—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01:*:*:*:*:*:*:*fw1120.01—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01.0:*:*:*:*:*:*:*fw1120.01.0—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:*fw1110.00—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:*fw1110.00.0—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31:*:*:*:*:*:*:*fw1110.31—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31.0:*:*:*:*:*:*:*fw1110.31.0—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:*fw1060.00—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:*fw1060.00.0—IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:* Versions fw1120.00 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00.0:*:*:*:*:*:*:* Versions fw1120.00.0 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01:*:*:*:*:*:*:* Versions fw1120.01 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1120.01.0:*:*:*:*:*:*:* Versions fw1120.01.0 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00:*:*:*:*:*:*:* Versions fw1110.00 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1110.00.0:*:*:*:*:*:*:* Versions fw1110.00.0 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31:*:*:*:*:*:*:* Versions fw1110.31 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1110.31.0:*:*:*:*:*:*:* Versions fw1110.31.0 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:* Versions fw1060.00 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:* Versions fw1060.00.0 — ·IBM
Show 2 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81:*:*:*:*:*:*:*fw1060.81—IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81.0:*:*:*:*:*:*:*fw1060.81.0—IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81:*:*:*:*:*:*:* Versions fw1060.81 — ·IBM
  • cpe:2.3:a:ibm:powervm_hypervisor:fw1060.81.0:*:*:*:*:*:*:* Versions fw1060.81.0 — ·IBM

Remediation

The sources list no fixed version for PowerVM Hypervisor.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-12 Threatist record created from CVE-2026-96263
  2. 2026-10-13 Alias added: GHSA-7x99-v7wf-cwv4
  3. 2026-10-13 CISA SSVC decision points changed
  4. 2026-10-13 Priority changed: MEDIUM → LOW
  5. 2026-10-13 CISA SSVC decision points changed

References

Patch 1

  • TI-2026-08085 Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-23774 IBM Aspera Faspex code execution KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-03794 Improper authentication in IBM Data Risk Manager KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-03441 Code injection in IBM Planning Analytics KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-03639 Improper handling of exceptional conditions in Apache Struts KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-06198 Serialized-object interfaces in certain IBM analytics, business solutions, cognitive, IT… KEVCVSS 3.1CRITICAL 9.8
See all 9711 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences