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CVE-2026-96263— IBM Power Systems Firmware Buffer Overflow

Quick assessment

Affected
IBM PowerVM Hypervisor
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM Power Systems 固件 FW1120.00 至 FW1120.01、FW1110.00 至 FW1110.31 以及 FW1060.00 至 FW1060.81 存在漏洞，该漏洞位于主机固件启动过程中的镜像验证路径。具有服务处理器访问权限的攻击者可以提供一个恶意构造的代码更新镜像，从而在主机系统上执行任意代码。成功利用此漏洞可能对受影响的主机系统的机密性、完整性和可用性造成损害。

CVSS 8.2 · High EPSS 0.17% · P6

Affected Version Matrix 3

VendorProduct Version RangeStatus
IBM PowerVM Hypervisor FW1120.00≤ FW1120.01 affected
FW1110.00≤ FW1110.31 affected
FW1060.00≤ FW1060.81 affected
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I. Basic Information for CVE-2026-96263

Vulnerability Information
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Vulnerability Title
IBM Power Systems Firmware Buffer Overflow
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM PowerVM Hypervisor FW1120.00 ~ FW1120.01 cpe:2.3:a:ibm:powervm_hypervisor:fw1120.00:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-96263

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III. Intelligence Information for CVE-2026-96263

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Vendor Advisories for CVE-2026-96263 (1)

Same Patch Batch · IBM · 2026-10-12 · 61 CVEs total

CVE-2026-96119 9.9 CRITICAL IBM i is Affected By An Improper Control of Code Generation Vulnerability in HTTP Server A
CVE-2026-96012 9.9 CRITICAL IBM Db2 Mirror for i Privilege Escalation
CVE-2026-90920 9.8 CRITICAL Maximo AI Service Code Injection
CVE-2026-82101 9.6 CRITICAL DataStage on Cloud Pak for Data Path Traversal
CVE-2026-82103 9.6 CRITICAL DataStage on Cloud Pak for Data Information Disclosure
CVE-2026-82110 9.6 CRITICAL DataStage on Cloud Pak for Data Path Traversal
CVE-2026-105465 8.8 HIGH IBM® Db2® is vulnerable to privilege escalation when db2ssh is enabled with the db2 instan
CVE-2026-19620 8.8 HIGH IBM Planning Analytics Local is affected by security vulnerabilities
CVE-2026-19622 8.8 HIGH IBM Planning Analytics Local is affected by security vulnerabilities
CVE-2026-102627 8.8 HIGH Security Vulnerability identified in IBM TRIRIGA - Zip Slip
CVE-2026-82096 8.8 HIGH DataStage on Cloud Pak for Data Command Injection
CVE-2026-82108 8.8 HIGH DataStage on Cloud Pak for Data Code Injection
CVE-2026-105464 8.8 HIGH IBM® Db2® is vulnerable to a local attacker with DBADM authorization gaining elevated priv
CVE-2026-18529 8.7 HIGH IBM Maximo Application Suite - Location Service for Esri Component Code Execution
CVE-2026-18537 8.7 HIGH IBM Maximo Application Suite - Location Service for Esri Component Code Execution
CVE-2026-93886 8.3 HIGH IBM i is Affected By An Improper Neutralization of Input Vulnerability in HTTP Server Admi
CVE-2026-96262 8.2 HIGH IBM Power Systems Firmware Buffer Overflow
CVE-2026-19627 8.2 HIGH IBM Planning Analytics Local is affected by security vulnerabilities
CVE-2026-96266 8.2 HIGH IBM Power Systems Firmware Buffer Overflow
CVE-2026-96265 8.2 HIGH IBM Power Systems Firmware Improper Memory Buffer Restriction

Showing top 20 of 61 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: PowerVM Hypervisor
Same vendor: IBM
Same weakness: CWE-121

V. Comments for CVE-2026-96263

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