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CVE-2026-96265— IBM Power Systems Firmware Improper Memory Buffer Restriction

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 FW1060.00 至 FW1060.81 存在一个与服务处理器邮箱接口相关的安全漏洞。攻击者若已通过身份验证并拥有对闪存服务处理器（FSP）的“service”级别访问权限，便可发送特制的邮箱消息，从而读取或修改 Hostboot 内存中的任意区域，进而破坏主机固件的引导栈，以及由其后续加载的 Hypervisor。成功利用此漏洞将导致受管系统在机密性、完整性和可用性方面受到严重影响。

CVSS 8.2 · High EPSS 0.17% · P6

Affected Version Matrix 1

VendorProduct Version RangeStatus
IBM PowerVM Hypervisor FW1060.00≤ FW1060.81 affected
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I. Basic Information for CVE-2026-96265

Vulnerability Information
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Vulnerability Title
IBM Power Systems Firmware Improper Memory Buffer Restriction
Source: CVE Program / CVE List V5
Vulnerability Description
IBM Power Systems Firmware FW1060.00 through FW1060.81 is affected by a vulnerability in the service processor mailbox interface. An attacker with authenticated service-level access to the FSP can send a specially crafted mailbox message to read or modify arbitrary regions of Hostboot memory, 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.
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
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM PowerVM Hypervisor FW1060.00 ~ FW1060.81 cpe:2.3:a:ibm:powervm_hypervisor:fw1060.00:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-96265

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III. Intelligence Information for CVE-2026-96265

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Vendor Advisories for CVE-2026-96265 (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-2026-96264 8.2 HIGH IBM Power Systems Firmware Buffer Overflow

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

IV. Related Vulnerabilities

Same product: PowerVM Hypervisor
Same vendor: IBM
Same weakness: CWE-119

V. Comments for CVE-2026-96265

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