TI-2026-71326 Aliases CVE-2026-96261 GHSA-4mp3-cxqr-qxhw

Stack-based buffer overflow in IBM Power Systems Firmware

LOW 31CWE-121Published 2026-10-12 · Updated 2026-10-12

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

IBM Power Systems Firmware FW1060.00 through FW1060.81 contains a stack-based buffer overflow (CWE-121) in host firmware configuration parsing. An attacker with authenticated service-level access to the service processor can write specially crafted configuration data, which crashes the host firmware boot stack with possible memory corruption during system initialisation. The flaw affects integrity and availability of the managed system.

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

Description from the CNA

IBM Power Systems Firmware FW1060.00 through FW1060.81 is affected by a vulnerability in host firmware configuration parsing. An attacker with authenticated service-level access to the service processor can write specially crafted configuration data, causing the host firmware boot stack to crash with possible memory corruption during system initialisation, resulting in an integrity and availability impact to the managed system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00098 0th percentileScored 2026-11-07

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: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
IBM	PowerVM Hypervisor	FW1060.00 – FW1060.81	—	No fix listed	CNA

PowerVM Hypervisor VendorIBM Affected FW1060.00 – FW1060.81 Fixed in — No fix listed CNA

CPE names CNA · 4

CPE	Versions	Role	Vendor
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: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:fw1060.00:*:*:*:*:*:*:* Versions fw1060.00 — ·IBM
cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00.0:*:*:*:*:*:*:* Versions fw1060.00.0 — ·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

2026-10-12 Threatist record created from CVE-2026-96261
2026-10-13 CISA SSVC decision points changed
2026-10-13 Priority changed: MEDIUM → LOW
2026-10-13 Alias added: GHSA-4mp3-cxqr-qxhw

References

Patch 1

https://www.ibm.com/support/pages/node/7290127

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Sources

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