High severity · published Oct 12, 2026
CVE-2026-96266
IBM Power Systems Firmware Buffer Overflow
8.2
CVSS
0.1%
EPSS
No
On KEV
Description
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 FSP can write specially crafted configuration data to cause memory corruption in the host firmware boot stage during system IPL, compromising the host firmware boot stack and the hypervisor subsequently loaded by it. Successful exploitation results in a confidentiality, integrity, and availability impact to the managed system.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
PowerVM Hypervisor · IBM
FW1060.00 through FW1060.81 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-96266
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-96266
vendor-advisory
https://www.ibm.com/support/pages/node/7290128
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