CVE-2026-4937 | BDVDB-2026-362159 Detail

IBMPowerVM Hypervisor

Description#

IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 could allow a local attacker with administrative privileges to decrypt encrypted data due to certain hypervisor calls utilizing less entropy than requested.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: local.

Weaknesses#

CWE-331 Insufficient Entropy

References#

https://www.ibm.com/support/pages/node/7283900

Exploit#

No public exploit known

History#

Version 12026-08-19Record published in the CVE List.
Version 22026-08-20Most recent update recorded in the CVE List.

Published

Published: 2026-08-19
Last modified: 2026-08-20

Vendor information

Vendor: IBM
Product: PowerVM Hypervisor

All IBM vulnerabilities

Score

5.3 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 2.8.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= FW1110.00 and <= FW1110.20
Fixed
Not stated
Vulnerable
>= FW1060.00 and <= FW1060.71
Fixed
Not stated
Vulnerable
>= FW950.00 and <= FW950.H2
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.3 Medium

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

Metric breakdown
Attack Vector	Local
Attack Complexity	High
Privileges Required	High
User Interaction	None
Scope	Changed
Confidentiality	High
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).