CVE-2026-17503

mediumpriority · track · 0EPSS 0.001 · 1 %ileUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.10% (1st) EPSS
CVSS 5.1 · medium
Is it mine?
34 products
Check your exposure
Who says so?
1 sources
nvd

EPSS · scored 2026-10-27

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, FW1060.00 through FW1060.81, and FW950.00 through FW950.H3 is affected by a vulnerability in the partition firmware runtime boot configuration. An attacker with root access to a partition can maliciously alter partition nvram, causing the partition to fail to boot. This condition persists until operator intervention — deleting and recreating the partition configuration — to restore normal operation. Successful exploitation results in an integrity and availability impact.

01

cvss

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

5.1
010

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

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:Hsecondary · psirt@us.ibm.com USexploitability 0.8 · impact 4.2
v3.14.7mediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H/E:Usecondary · CVSS-BT (t0sche)
02

weaknesses

The CWE weakness classes this flaw belongs to.

03

affected products (34)

Products and version ranges known to be affected.

showing 20 of 34
04

sources

Which sources assert this record, and when.

published 2026-09-24modified 2026-09-30
05

references (1) nvd

External citations — patches, advisories, analysis.

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