CVE-2026-18857

This Power System update is being released to address

LOW
3.4
CVSS Score
Published: September 24, 2026 at 02:13 PM UTC
Updated: September 30, 2026 at 04:48 PM UTC
35 products affected across 1 vendorPower System L1022 (9786-22h ) FirmwarePower System S1012 (9028-21b ) FirmwarePower System E1050 (9043-mrx ) Firmware

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Severity
LOW3.4
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

IBM OPENBMC FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in the BMC firmware management interface. The host system can cause the BMC firmware management service to crash or allow a limited amount of BMC internal memory to be read, resulting in a confidentiality and availability impact to the managed system.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

fw1060.00 ≤ v < fw1060.82
Affected range stops below fw1060.82, so it looks safe — our inference, not a vendor statement
ibm-power-system-e1050-9043-mrx (same device)
fw1110.00 ≤ v < fw1110.32fw1120.00 ≤ v < fw1120.02
Affected range stops below fw1110.32, so it looks safe — our inference, not a vendor statement
Affected range stops below fw1120.02, so it looks safe — our inference, not a vendor statement
ibm-power-system-e1150-9043-mru (same device)
fw1060.00 ≤ v < fw1060.82
Affected range stops below fw1060.82, so it looks safe — our inference, not a vendor statement
ibm-power-system-l1022-9786-22h (same device)
fw1060.00 ≤ v < fw1060.82
Affected range stops below fw1060.82, so it looks safe — our inference, not a vendor statement
ibm-power-system-l1024-9786-42h (same device)
fw1110.00 ≤ v < fw1110.32fw1120.00 ≤ v < fw1120.02
Affected range stops below fw1110.32, so it looks safe — our inference, not a vendor statement
Affected range stops below fw1120.02, so it looks safe — our inference, not a vendor statement
ibm-power-system-l1122-9856-22h (same device)
fw1110.00 ≤ v < fw1110.32fw1120.00 ≤ v < fw1120.02
Affected range stops below fw1110.32, so it looks safe — our inference, not a vendor statement
Affected range stops below fw1120.02, so it looks safe — our inference, not a vendor statement
ibm-power-system-l1124-9856-42h (same device)
fw1060.00 ≤ v < fw1060.82
Affected range stops below fw1060.82, so it looks safe — our inference, not a vendor statement
ibm-power-system-s1012-9028-21b (same device)
fw1060.00 ≤ v < fw1060.82
Affected range stops below fw1060.82, so it looks safe — our inference, not a vendor statement
ibm-power-system-s1014-9105-41b (same device)
fw1060.00 ≤ v < fw1060.82
Affected range stops below fw1060.82, so it looks safe — our inference, not a vendor statement
ibm-power-system-s1022-9105-22a (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://www.ibm.com/support/pages/node/7289253

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.4LOWibm
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-125

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