CVE-2026-17503CWE-20

CVE-2026-17503

Medium · published September 24, 2026

CVSS v3.1
5.1
EPSS
0%
Percentile
1.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00105 · 1.0th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2026-09-24T18:17Z
Affected products (34)
ProductVersionsFixed in
ibm/power_system_s1122_\(9824-22a\)_firmware≥ fw1110.00, < fw1110.32fw1110.32
ibm/power_system_s1122_\(9824-22a\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_s1124_\(9824-42a\)_firmware≥ fw1110.00, < fw1110.32fw1110.32
ibm/power_system_s1124_\(9824-42a\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_s1122s_\(9824-22b\)_firmware≥ fw1110.00, < fw1110.32fw1110.32
ibm/power_system_s1122s_\(9824-22b\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_s1114_\(9824-41b\)_firmware≥ fw1110.00, < fw1110.32fw1110.32
ibm/power_system_s1114_\(9824-41b\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_l1122_\(9856-22h\)_firmware≥ fw1110.00, < fw1110.32fw1110.32
ibm/power_system_l1122_\(9856-22h\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_l1124_\(9856-42h\)_firmware≥ fw1110.00, < fw1110.32fw1110.32
ibm/power_system_l1124_\(9856-42h\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_e1150_\(9043-mru\)_firmware≥ fw1110.00, < fw1110.32fw1110.32
ibm/power_system_e1150_\(9043-mru\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_s1112_\(9242-21b\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_s1112_\(9242-21t\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_e1080_\(9080-hex\)_firmware≥ fw1060.00, < fw1060.82fw1060.82
ibm/power_system_s1022_\(9105-22a\)_firmware≥ fw1060.00, < fw1060.82fw1060.82
ibm/power_system_s1024_\(9105-42a\)_firmware≥ fw1060.00, < fw1060.82fw1060.82
ibm/power_system_s1022s_\(9105-22b\)_firmware≥ fw1060.00, < fw1060.82fw1060.82
ibm/power_system_s1014_\(9105-41b\)_firmware≥ fw1060.00, < fw1060.82fw1060.82
ibm/power_system_l1022_\(9786-22h\)_firmware≥ fw1060.00, < fw1060.82fw1060.82
ibm/power_system_l1024_\(9786-42h\)_firmware≥ fw1060.00, < fw1060.82fw1060.82
ibm/power_system_e1050_\(9043-mrx\)_firmware≥ fw1060.00, < fw1060.82fw1060.82
ibm/power_system_s1012_\(9028-21b\)_firmware≥ fw1060.00, < fw1060.82fw1060.82
ibm/power_system_e1180_\(9080-heu\)_firmware≥ fw1110.00, < fw1110.32fw1110.32
ibm/power_system_e1180_\(9080-heu\)_firmware≥ fw1120.00, < fw1120.02fw1120.02
ibm/power_system_s922_\(9009-22g\)_firmware≥ fw950.00, < fw950.h4fw950.h4
ibm/power_system_h922_\(9223-22s\)_firmware≥ fw950.00, < fw950.h4fw950.h4
ibm/power_system_s914_\(9009-41g\)_firmware≥ fw950.00, < fw950.h4fw950.h4
ibm/power_system_s924_\(9009-42g\)_firmware≥ fw950.00, < fw950.h4fw950.h4
ibm/power_system_h924_\(9223-42s\)_firmware≥ fw950.00, < fw950.h4fw950.h4
ibm/power_system_e950_\(9040-mr9\)_firmware≥ fw950.00, < fw950.h4fw950.h4
ibm/power_system_e980_\(9080-m9s\)_firmware≥ fw950.00, < fw950.h4fw950.h4
References (1)
EPSS history
Timeline
  • 26 SEP 03:23Z
    EPSS moved — → 0%
    epss
  • 24 SEP 14:06Z
    This Power System update is being released to address
    cvelistv5