CVE-2026-18849

IBM OpenBMC Code Execution

MEDIUM
6.8
CVSS Score
Published: August 19, 2026 at 08:21 PM UTC
Updated: September 2, 2026 at 07:12 PM UTC
17 products affected across 1 vendorPower System L1022 (9786-22h ) FirmwarePower System E1050 (9043-mrx ) FirmwarePower System S1012 (9028-21b ) Firmware

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

IBM OpenBMC FW1060.00 through FW1060.80 is affected by a vulnerability in the BMC firmware update process. An attacker with authenticated administrator-level access to the BMC can, under specific conditions, execute arbitrary code, resulting in a confidentiality, integrity, and availability impact.

Affected

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

fw1060.00 ≤ v ≤ fw1060.80FW1060.00fw1060.00fw1060.80
fw1060.00 ≤ v < fw1060.81
Affected range stops below fw1060.81, so it looks safe — our inference, not a vendor statement
ibm-power-system-e1050-9043-mrx (same device)
fw1060.00 ≤ v < fw1060.81
Affected range stops below fw1060.81, so it looks safe — our inference, not a vendor statement
ibm-power-system-l1022-9786-22h (same device)
fw1060.00 ≤ v < fw1060.81
Affected range stops below fw1060.81, so it looks safe — our inference, not a vendor statement
ibm-power-system-l1024-9786-42h (same device)
fw1060.00 ≤ v < fw1060.81
Affected range stops below fw1060.81, so it looks safe — our inference, not a vendor statement
ibm-power-system-s1012-9028-21b (same device)
fw1060.00 ≤ v < fw1060.81
Affected range stops below fw1060.81, so it looks safe — our inference, not a vendor statement
ibm-power-system-s1014-9105-41b (same device)
fw1060.00 ≤ v < fw1060.81
Affected range stops below fw1060.81, so it looks safe — our inference, not a vendor statement
ibm-power-system-s1022-9105-22a (same device)
fw1060.00 ≤ v < fw1060.81
Affected range stops below fw1060.81, so it looks safe — our inference, not a vendor statement
ibm-power-system-s1022s-9105-22b (same device)
fw1060.00 ≤ v < fw1060.81
Affected range stops below fw1060.81, so it looks safe — our inference, not a vendor statement
ibm-power-system-s1024-9105-42a (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/7283590

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

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

CVSS

6.8MEDIUMibm
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-22

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