CVE-2026-17503

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. It has a CVSS v3.1 base score of 5.1 (MEDIUM).

CVE-2026-17503 has a CVSS v3.1 score of 5.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0011, placing it in the 0th percentile for exploitation probability.

CVE-2026-17503 affects products from ibm, specifically: power_system_e1050_\(9043-mrx\), power_system_e1050_\(9043-mrx\)_firmware, power_system_e1080_\(9080-hex\), power_system_e1080_\(9080-hex\)_firmware, power_system_e1150_\(9043-mru\), power_system_e1150_\(9043-mru\)_firmware, power_system_e1180_\(9080-heu\), power_system_e1180_\(9080-heu\)_firmware, power_system_e950_\(9040-mr9\), power_system_e950_\(9040-mr9\)_firmware, power_system_e980_\(9080-m9s\), power_system_e980_\(9080-m9s\)_firmware, power_system_h922_\(9223-22s\), power_system_h922_\(9223-22s\)_firmware, power_system_h924_\(9223-42s\), power_system_h924_\(9223-42s\)_firmware, power_system_l1022_\(9786-22h\), power_system_l1022_\(9786-22h\)_firmware, power_system_l1024_\(9786-42h\), power_system_l1024_\(9786-42h\)_firmware, power_system_l1122_\(9856-22h\), power_system_l1122_\(9856-22h\)_firmware, power_system_l1124_\(9856-42h\), power_system_l1124_\(9856-42h\)_firmware, power_system_s1012_\(9028-21b\), power_system_s1012_\(9028-21b\)_firmware, power_system_s1014_\(9105-41b\), power_system_s1014_\(9105-41b\)_firmware, power_system_s1022_\(9105-22a\), power_system_s1022_\(9105-22a\)_firmware, power_system_s1022s_\(9105-22b\), power_system_s1022s_\(9105-22b\)_firmware, power_system_s1024_\(9105-42a\), power_system_s1024_\(9105-42a\)_firmware, power_system_s1112_\(9242-21b\), power_system_s1112_\(9242-21b\)_firmware, power_system_s1112_\(9242-21t\), power_system_s1112_\(9242-21t\)_firmware, power_system_s1114_\(9824-41b\), power_system_s1114_\(9824-41b\)_firmware, power_system_s1122_\(9824-22a\), power_system_s1122_\(9824-22a\)_firmware, power_system_s1122s_\(9824-22b\), power_system_s1122s_\(9824-22b\)_firmware, power_system_s1124_\(9824-42a\), power_system_s1124_\(9824-42a\)_firmware, power_system_s914_\(9009-41g\), power_system_s914_\(9009-41g\)_firmware, power_system_s922_\(9009-22g\), power_system_s922_\(9009-22g\)_firmware, power_system_s924_\(9009-42g\), power_system_s924_\(9009-42g\)_firmware. Check the affected products table above for specific version ranges.

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.