CVE-2026-17503 — MEDIUM (5.1)

Q: How severe is CVE-2026-17503?

CVE-2026-17503 has been rated MEDIUM with a CVSS base score of 5.1/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-17503?

Check the references section above for vendor advisories and patch information. Affected products include: Ibm Power System S1122 \(9824-22A\) Firmware, Ibm Power System S1122 \(9824-22A\), Ibm Power System S1124 \(9824-42A\) Firmware, Ibm Power System S1124 \(9824-42A\), Ibm Power System S1122S \(9824-22B\) Firmware.

Vulnerability Description

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.

CVSS Score

5.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ibm	Power System S1122 \(9824-22A\) Firmware	>= fw1110.00, < fw1110.32
Ibm	Power System S1122 \(9824-22A\)	-
Ibm	Power System S1124 \(9824-42A\) Firmware	>= fw1110.00, < fw1110.32
Ibm	Power System S1124 \(9824-42A\)	-
Ibm	Power System S1122S \(9824-22B\) Firmware	>= fw1110.00, < fw1110.32
Ibm	Power System S1122S \(9824-22B\)	-
Ibm	Power System S1114 \(9824-41B\) Firmware	>= fw1110.00, < fw1110.32
Ibm	Power System S1114 \(9824-41B\)	-
Ibm	Power System L1122 \(9856-22H\) Firmware	>= fw1110.00, < fw1110.32
Ibm	Power System L1122 \(9856-22H\)	-
Ibm	Power System L1124 \(9856-42H\) Firmware	>= fw1110.00, < fw1110.32
Ibm	Power System L1124 \(9856-42H\)	-
Ibm	Power System E1150 \(9043-Mru\) Firmware	>= fw1110.00, < fw1110.32
Ibm	Power System E1150 \(9043-Mru\)	-
Ibm	Power System S1112 \(9242-21B\) Firmware	>= fw1120.00, < fw1120.02
Ibm	Power System S1112 \(9242-21B\)	-
Ibm	Power System S1112 \(9242-21T\) Firmware	>= fw1120.00, < fw1120.02
Ibm	Power System S1112 \(9242-21T\)	-
Ibm	Power System E1080 \(9080-Hex\) Firmware	>= fw1060.00, < fw1060.82
Ibm	Power System E1080 \(9080-Hex\)	-

Related Weaknesses (CWE)

CWE-20

References

https://www.ibm.com/support/pages/node/7289133PatchVendor Advisory

FAQ

What is CVE-2026-17503?

CVE-2026-17503 is a vulnerability with a CVSS score of 5.1 (MEDIUM). 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 run...

How severe is CVE-2026-17503?

CVE-2026-17503 has been rated MEDIUM with a CVSS base score of 5.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-17503?

Check the references section above for vendor advisories and patch information. Affected products include: Ibm Power System S1122 \(9824-22A\) Firmware, Ibm Power System S1122 \(9824-22A\), Ibm Power System S1124 \(9824-42A\) Firmware, Ibm Power System S1124 \(9824-42A\), Ibm Power System S1122S \(9824-22B\) Firmware.