What is the CVSS score of EUVD-2026-49954?

EUVD-2026-49954 has a CVSS 3.1 base score of 4.6 (Medium). CVSS vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

Is there a patch available for EUVD-2026-49954?

Yes, a patch is available for EUVD-2026-49954. Update the affected software to the latest version immediately.

Powervm Hypervisor EUVD-2026-49954

| CVE-2026-4932 MEDIUM

Insufficient Entropy (CWE-331)

2026-07-28 ibm

GHSA-4hx2-qrcw-x8xr

Information Disclosure IBM Powervm Hypervisor

4.6

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness

CWE

CWE-331

OWASP Top 10:2025

A04:2025 - Cryptographic Failures

ASVS 5.0

V11 - Cryptography Entropy requirements

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 28, 2026

Physical access to IBM PowerVM Hypervisor firmware with Transparent Memory Encryption (TME) enabled can allow an attacker to decrypt protected memory contents due to insufficient entropy. This information disclosure vulnerability affects firmware versions FW1110.00–FW1110.20 and FW1060.00–FW1060.71, potentially exposing sensitive data stored in memory. No public exploit code or active exploitation evidence is available at the time of analysis.

Affected VersionsENISA

PowerVM Hypervisor FW1060.00 ≤FW1060.71

PowerVM Hypervisor FW1110.00 ≤FW1110.20

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (ibm) PRIMARY MEDIUM

NVD 4.6 MEDIUM

AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Primary rating from Vendor (ibm).

CVSS VectorNVD

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

CVSS changed

Aug 26, 2026 - 15:52 NVD

4.2 (MEDIUM) 4.6 (MEDIUM)

DescriptionNVD

IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.

Threat Intelligence Overview

EPSS Score

0.1%

Top 100% exploitable

Data Quality

6 sources

Confidence: High

EUVD 🇯🇵JVN

NVD

CVE.org

EPSS

Vulnrichment

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation

None

System Exposure· derived

Small

Automatable

Human Impact· derived

Medium

Technical Impact

Partial

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +23

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.