CVE-2026-96265

IBM Power Systems Firmware Improper Memory Buffer Restriction

CVSS score

8.2

EPSS probability

—

Risk score

0.8

Published

2 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

IBM Power Systems Firmware Vulnerability CVE-2026-96265

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A memory buffer overflow vulnerability affects the service processor mailbox interface in IBM Power Systems Firmware (S0). An attacker with authenticated service-level access to the FSP can send specially crafted mailbox messages to read or modify arbitrary Hostboot memory regions (S0). This can compromise the host firmware boot stack and the loaded hypervisor (S0).

Why does it matter?

Successful exploitation results in confidentiality, integrity, and availability impacts to the managed system (S0).

What should be done?

Following vendor advisories for updates (S0)

Chain of evidence and sources2 verified claims

IBM Power Systems Firmware FW1060.00 ile FW1060.81 sürümleri servis işlemcisi posta kutusu arayüzündeki zayıflıktan etkilenmektedir.

S0 · daybreach-canonical S1 · nvd

Saldırgan Hostboot belleğini okuyarak veya değiştirerek ana makine önyükleme yığınını ele geçirebilir.

S0 · daybreach-canonical S1 · nvd

Show the technical text from the sources

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.

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CWE: CWE-119

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-96265 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	ibm	PowerVM Hypervisor	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
8.2	CVSS V31	HIGH	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H	NVD
8.2	CVSS V3_1	HIGH	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

CNA çözüm referansı

Open source

reference

Yama veya çözüm referansı

Open source

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Apply the official update named in the evidence only to the matching product and version.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-96265 is associated with the following CWEs:

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-96265 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim

PermissionsHigh

UserGerekmiyor

Official Sources and Advisories

https://www.ibm.com/support/pages/node/7290124patch

CVSS Vector Radar Chart

8.2 / 10

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh privileges

User InteractionNone required

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)None

Availability (Erişilebilirlik)High

Yama doğrulandı

2 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

Follow the vendor

ibm

Weakness Type (CWE & CAPEC)

CWE-119

Similar Vulnerabilities

9.8

CVE-2026-9198 Actively exploited

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