CVE-2026-4936
mediumpriority · track · 25EPSS 0.001 · 1 %ileUSEPSS · scored 2026-10-24
IBM PowerVM Hypervisor Platform KeyStore (PKS) and virtual TPM FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 use persistent storage key seeds that result in an AES key with reduced strength. An attacker with access to the service processor or HMC could exploit this weakness to derive the encryption key and access the data.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (34)
Products and version ranges known to be affected.
- ibm power system e1050 (9043-mrx) firmwarefw1060.00 → fw1060.72nvdUScpe:2.3:o:ibm:power_system_e1050_\(9043-mrx\)_firmware:*:*:*:*:*:*:*:*
- ibm power system e1080 (9080-hex) firmwarefw1060.00 → fw1060.72nvdUScpe:2.3:o:ibm:power_system_e1080_\(9080-hex\)_firmware:*:*:*:*:*:*:*:*
- ibm power system e1150 (9043-mru) firmwarefw1110.00 → fw1110.30nvdUScpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:*:*:*:*:*:*:*:*
- ibm power system e1150 (9043-mru) firmware= fw1120.00nvdUScpe:2.3:o:ibm:power_system_e1150_\(9043-mru\)_firmware:*:*:*:*:*:*:*:*
- ibm power system e1180 (9080-heu) firmwarefw1110.00 → fw1110.30nvdUScpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware:*:*:*:*:*:*:*:*
- ibm power system e1180 (9080-heu) firmware= fw1120.00nvdUScpe:2.3:o:ibm:power_system_e1180_\(9080-heu\)_firmware:*:*:*:*:*:*:*:*
- ibm power system e950 (9040-mr9) firmwarefw950.00 → fw950.h3nvdUScpe:2.3:o:ibm:power_system_e950_\(9040-mr9\)_firmware:*:*:*:*:*:*:*:*
- ibm power system e980 (9080-m9s) firmwarefw950.00 → fw950.h3nvdUScpe:2.3:o:ibm:power_system_e980_\(9080-m9s\)_firmware:*:*:*:*:*:*:*:*
- ibm power system h922 (9223-22s) firmwarefw950.00 → fw950.h3nvdUScpe:2.3:o:ibm:power_system_h922_\(9223-22s\)_firmware:*:*:*:*:*:*:*:*
- ibm power system h924 (9223-42s) firmwarefw950.00 → fw950.h3nvdUScpe:2.3:o:ibm:power_system_h924_\(9223-42s\)_firmware:*:*:*:*:*:*:*:*
- ibm power system l1022 (9786-22h) firmwarefw1060.00 → fw1060.72nvdUScpe:2.3:o:ibm:power_system_l1022_\(9786-22h\)_firmware:*:*:*:*:*:*:*:*
- ibm power system l1024 (9786-42h) firmwarefw1060.00 → fw1060.72nvdUScpe:2.3:o:ibm:power_system_l1024_\(9786-42h\)_firmware:*:*:*:*:*:*:*:*
- ibm power system l1122 (9856-22h) firmwarefw1110.00 → fw1110.30nvdUScpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:*:*:*:*:*:*:*:*
- ibm power system l1122 (9856-22h) firmware= fw1120.00nvdUScpe:2.3:o:ibm:power_system_l1122_\(9856-22h\)_firmware:*:*:*:*:*:*:*:*
- ibm power system l1124 (9856-42h) firmwarefw1110.00 → fw1110.30nvdUScpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:*:*:*:*:*:*:*:*
- ibm power system l1124 (9856-42h) firmware= fw1120.00nvdUScpe:2.3:o:ibm:power_system_l1124_\(9856-42h\)_firmware:*:*:*:*:*:*:*:*
- ibm power system s1012 (9028-21b) firmwarefw1060.00 → fw1060.72nvdUScpe:2.3:o:ibm:power_system_s1012_\(9028-21b\)_firmware:*:*:*:*:*:*:*:*
- ibm power system s1014 (9105-41b) firmwarefw1060.00 → fw1060.72nvdUScpe:2.3:o:ibm:power_system_s1014_\(9105-41b\)_firmware:*:*:*:*:*:*:*:*
- ibm power system s1022 (9105-22a) firmwarefw1060.00 → fw1060.72nvdUScpe:2.3:o:ibm:power_system_s1022_\(9105-22a\)_firmware:*:*:*:*:*:*:*:*
- ibm power system s1022s (9105-22b) firmwarefw1060.00 → fw1060.72nvdUScpe:2.3:o:ibm:power_system_s1022s_\(9105-22b\)_firmware:*:*:*:*:*:*:*:*
sources
Which sources assert this record, and when.
references (1) nvd
External citations — patches, advisories, analysis.
- https://www.ibm.com/support/pages/node/7283890Vendor Advisory
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