CVE-2026-17091

highpriority · track · 0EPSS 0.001 · 4 %ileUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.15% (4th) EPSS
CVSS 8.4 · high
Is it mine?
34 products
Check your exposure
Who says so?
1 sources
nvd

EPSS · scored 2026-10-27

IBM PowerVM Hypervisor FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the PowerVM hypervisor call interface. An attacker with root access to a guest partition can issue a specially crafted hypervisor call to inject an arbitrary amount of data into hypervisor or partition memory, resulting in either a crash causing a full platform re-IPL and terminating all hosted partitions, or corruption of hypervisor or partition memory. The PowerVM hypervisor will restart automatically; however, repeated exploitation could result in a sustained availability impact. Successful exploitation results in an integrity and availability impact to the managed system.

01

cvss

Technical severity, 0–10. One row per scoring source.

8.4
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.4highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:Hsecondary · psirt@us.ibm.com USexploitability 2 · impact 5.8
v3.17.7highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-190US
04

affected products (34)

Products and version ranges known to be affected.

showing 20 of 34
05

sources

Which sources assert this record, and when.

nvdNVDCVE.orgMITRE
published 2026-08-19modified 2026-08-25
06

references (1) nvd

External citations — patches, advisories, analysis.

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