CVE-2026-19321
Analyzed
Analyzed - Analysis Complete
Buffer Overflow in IBM Power Systems Firmware
Vulnerability report for CVE-2026-19321, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-08-19
Last updated on: 2026-08-25
Assigner: IBM Corporation
Description
Description
Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in the host firmware. An attacker with service access to the service processor can supply a carefully crafted command that could leak the contents of hardware registers that should be inaccessible to the service processor. Successful exploitation could result in limited confidentiality or availability impacts to the affected host system.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ibm | power_system_s1122_(9824-22a)_firmware | From fw1110.00 (inc) to fw1110.31 (exc) |
| ibm | power_system_s1122_(9824-22a)_firmware | fw1120.00 |
| ibm | power_system_s1124_(9824-42a)_firmware | From fw1110.00 (inc) to fw1110.31 (exc) |
| ibm | power_system_s1124_(9824-42a)_firmware | fw1120.00 |
| ibm | power_system_s1122s_(9824-22b)_firmware | From fw1110.00 (inc) to fw1110.31 (exc) |
| ibm | power_system_s1122s_(9824-22b)_firmware | fw1120.00 |
| ibm | power_system_s1114_(9824-41b)_firmware | From fw1110.00 (inc) to fw1110.31 (exc) |
| ibm | power_system_s1114_(9824-41b)_firmware | fw1120.00 |
| ibm | power_system_l1122_(9856-22h)_firmware | From fw1110.00 (inc) to fw1110.31 (exc) |
| ibm | power_system_l1122_(9856-22h)_firmware | fw1120.00 |
| ibm | power_system_l1124_(9856-42h)_firmware | From fw1110.00 (inc) to fw1110.31 (exc) |
| ibm | power_system_l1124_(9856-42h)_firmware | fw1120.00 |
| ibm | power_system_e1150_(9043-mru)_firmware | From fw1110.00 (inc) to fw1110.31 (exc) |
| ibm | power_system_e1150_(9043-mru)_firmware | fw1120.00 |
| ibm | power_system_s1112_(9242-21b)_firmware | fw1120.00 |
| ibm | power_system_s1112_(9242-21t)_firmware | fw1120.00 |
| ibm | power_system_e1080_(9080-hex)_firmware | From fw1060.00 (inc) to fw1060.81 (exc) |
| ibm | power_system_s1022_(9105-22a)_firmware | From fw1060.00 (inc) to fw1060.81 (exc) |
| ibm | power_system_s1024_(9105-42a)_firmware | From fw1060.00 (inc) to fw1060.81 (exc) |
| ibm | power_system_s1022s_(9105-22b)_firmware | From fw1060.00 (inc) to fw1060.81 (exc) |
| ibm | power_system_s1014_(9105-41b)_firmware | From fw1060.00 (inc) to fw1060.81 (exc) |
| ibm | power_system_l1022_(9786-22h)_firmware | From fw1060.00 (inc) to fw1060.81 (exc) |
| ibm | power_system_l1024_(9786-42h)_firmware | From fw1060.00 (inc) to fw1060.81 (exc) |
| ibm | power_system_e1050_(9043-mrx)_firmware | From fw1060.00 (inc) to fw1060.81 (exc) |
| ibm | power_system_s1012_(9028-21b)_firmware | From fw1060.00 (inc) to fw1060.81 (exc) |
| ibm | power_system_e1180_(9080-heu)_firmware | From fw1110.00 (inc) to fw1110.31 (exc) |
| ibm | power_system_e1180_(9080-heu)_firmware | fw1120.00 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-190 | The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. |
