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01 Record

CVE-2021-38918

IBM PowerVM Hypervisor FW860, FW940, FW950, and FW1010, through a specific sequence of VM management operations could lead to a violation of the isolation between peer VMs. IBM X-Force ID: 210019.

HighPUBLISHEDCNA: ibm
CNA base score8.6 CVSS v3.xCVSS:3.0/I:N/AC:L/AV:N/UI:N/C:H/A:N/S:C/PR:N/RC:C/RL:O/E:U
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02 Description

IBM PowerVM Hypervisor FW860, FW940, FW950, and FW1010, through a specific sequence of VM management operations could lead to a violation of the isolation between peer VMs. IBM X-Force ID: 210019.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.25% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 69.3% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-01-05 16:30Z4 YR AGO
Last updated
2024-09-16 20:47Z2 YR AGO
Reserved
2021-08-16
Assigning CNA
ibm
Record state
PUBLISHED
Severity
High (CVSS 8.6)
CNA CVSS vector
CVSS:3.0/I:N/AC:L/AV:N/UI:N/C:H/A:N/S:C/PR:N/RC:C/RL:O/E:U
Weaknesses
No CWE assigned
Data version
5.1
Document digest
3511b4dd156dc84d1d142d89040bba5ecce21421b64c0b673d4961ef6945def1

05 Affected products

VendorProductVersionsPlatforms
IBMPowerVM HypervisorFW940, FW950, FW860, FW1010—

06 References