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01 Record

CVE-2021-38917

IBM PowerVM Hypervisor FW860, FW940, and FW950 could allow an attacker that gains service access to the FSP can read and write arbitrary host system memory through a series of carefully crafted

HighPUBLISHEDCNA: ibm
CNA base score7.4 CVSS v3.xCVSS:3.0/AV:N/PR:N/UI:N/I:H/AC:H/C:H/A:N/S:U/RC:C/RL:O/E:U
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02 Description

IBM PowerVM Hypervisor FW860, FW940, and FW950 could allow an attacker that gains service access to the FSP can read and write arbitrary host system memory through a series of carefully crafted

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
1.58% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 75.2% of scored records. A rank, not a probability.
NVD base score
9.1 (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:H/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
2021-12-10 17:50Z4 YR AGO
Last updated
2024-09-16 17:19Z2 YR AGO
Reserved
2021-08-16
Assigning CNA
ibm
Record state
PUBLISHED
Severity
High (CVSS 7.4)
CNA CVSS vector
CVSS:3.0/AV:N/PR:N/UI:N/I:H/AC:H/C:H/A:N/S:U/RC:C/RL:O/E:U
Weaknesses
No CWE assigned
Data version
5.1
Document digest
984c7a590559d3e5b65b149cb02ec9d08e64d0ea5f24c1d3d1b1bc35c2bc5819

05 Affected products

VendorProductVersionsPlatforms
IBMPowerVM HypervisorFW940, FW950, FW860—

06 References