CVE-2026-17503
5.1 · MEDIUMIBM 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…
Overview
CVE-2026-17503 is a medium-severity vulnerability affecting ibm power_system_s1122_\(9824-22a\)_firmware. It was published on September 24, 2026 and has a CVSS 3.1 base score of 5.1 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.1, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from ibm. Update power_system_s1122_\(9824-22a\)_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| ibm | power_system_s1122_\(9824-22a\)_firmware | >= fw1110.00, < fw1110.32 | Affected |
| ibm | power_system_s1124_\(9824-42a\)_firmware | >= fw1110.00, < fw1110.32 | Affected |
| ibm | power_system_s1122s_\(9824-22b\)_firmware | >= fw1110.00, < fw1110.32 | Affected |
| ibm | power_system_s1114_\(9824-41b\)_firmware | >= fw1110.00, < fw1110.32 | Affected |
| ibm | power_system_l1122_\(9856-22h\)_firmware | >= fw1110.00, < fw1110.32 | Affected |
| ibm | power_system_l1124_\(9856-42h\)_firmware | >= fw1110.00, < fw1110.32 | Affected |
| ibm | power_system_e1150_\(9043-mru\)_firmware | >= fw1110.00, < fw1110.32 | Affected |
| ibm | power_system_s1112_\(9242-21b\)_firmware | >= fw1120.00, < fw1120.02 | Affected |
| ibm | power_system_s1112_\(9242-21t\)_firmware | >= fw1120.00, < fw1120.02 | Affected |
| ibm | power_system_e1080_\(9080-hex\)_firmware | >= fw1060.00, < fw1060.82 | Affected |
References
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Frequently asked questions
What is CVE-2026-17503?
CVE-2026-17503 is a medium-severity vulnerability affecting ibm power_system_s1122_\(9824-22a\)_firmware. It was published on September 24, 2026 and has a CVSS 3.1 base score of 5.1 (MEDIUM).
How severe is CVE-2026-17503?
This vulnerability has a CVSS 3.1 base score of 5.1, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-17503?
Check the references section for vendor advisories and patches from ibm. Update power_system_s1122_\(9824-22a\)_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-17503?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-17503 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
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