Power System Buffer Overflow
Summary
| CVE | CVE-2026-16832 |
|---|---|
| State | PUBLISHED |
| Assigner | ibm |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-19 19:17:10 UTC |
| Updated | 2026-08-22 04:17:15 UTC |
| Description | IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the FSP management network protocol. An attacker with authenticated HMC administrator access can execute arbitrary code on the service processor, giving full control over the managed system, resulting in a confidentiality, integrity, and availability impact. |
Risk And Classification
Primary CVSS: v3.1 8.4 HIGH from [email protected]
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS: 0.001900000 probability, percentile 0.089440000 (date 2026-08-21)
Problem Types: CWE-121 | CWE-121 CWE-121 Stack-based Buffer Overflow
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 8.4 | HIGH | CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 8.4 | HIGH | CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
CVSS v3.1 Breakdown
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | IBM | Power Systems Firmware | affected FW1120.00 | Not specified |
| CNA | IBM | Power Systems Firmware | affected FW1110.00 FW1110.30 semver | Not specified |
| CNA | IBM | Power Systems Firmware | affected FW1060.00 FW1060.80 semver | Not specified |
| CNA | IBM | Power Systems Firmware | affected FW950.00 FW950.H2 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.ibm.com/support/pages/node/7283895 | [email protected] | www.ibm.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
Solutions
CNA: Customers with the products below should install FW1120.01(1120_167), FW1110.31(1110_134), or newer to remediate this vulnerability. Power 11 1) IBM Power System E1180 (9080-HEU) Customers with the products below should install FW1060.81(1060_184), or newer to remediate this vulnerability. Power 10 1) IBM Power System E1080 (9080-HEX) Customers with the products below should install FW950.H3(950_230), or newer to remediate this vulnerability. Power9 1) IBM Power System S922 (9009-22G) 2) IBM Power System H922 (9223-22S) 3) IBM Power System S914 (9009-41G) 4) IBM Power System S924 (9009-42G) 5) IBM Power System H924 (9223-42S) 6) IBM Power System E950 (9040-MR9) 7) IBM Power System E980 (9080-M9S) The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/
Workarounds
CNA: Protect access to the FSP's network interface.