This Power System update is being released to address (CVE-2026-18857) | HOL Guard CVE

Low · CVSS 3.4CVE-2026-18857

This Power System update is being released to address

Answer in brief

CVE-2026-18857 records a Low severity (CVSS 3.4) vulnerability in This Power System update is being released to address. The current sources do not mark it as known exploited. The current feed maps IBM/OPENBMC (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 24, 2026Updated Sep 24, 2026Source checked Sep 24, 2026First seen by HOL Sep 24, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: Low · CVSS 3.4
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 3.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps IBM/OPENBMC (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
IBM/OPENBMCgeneric	>=FW1120.00 <=FW1120.01 \|\| >=FW1110.00 <=FW1110.31 \|\| >=FW1060.00 <=FW1060.81	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for IBM/OPENBMC.
Review the reported fix. Source-reported solution: Customers with the products below should install FW1120.02(1120_195), FW1110.32(1110_160) or newer to remediate this vulnerability. Power 11 1) IBM Power System S1122 (9824-22A) 2) IBM Power System S1124 (9824-42A) 3) IBM Power System S1122s (9824-22B) 4) IBM Power System S1114 (9824-41B) 5) IBM Power System L1122 (9856-22H) 6) IBM Power System L1124 (9856-42H) 7) IBM Power System E1150 (9043-MRU) 8) IBM Power System S1112 (9242-21B, 9242-21T) Customers with the products below should install FW1060.82(1060_199) or newer to remediate this vulnerability. Power 10 1) IBM Power System S1022 (9105-22A) 2) IBM Power System S1024 (9105-42A) 3) IBM Power System S1022s (9105-22B) 4) IBM Power System S1014 (9105-41B) 5) IBM Power System L1022 (9786-22H) 6) IBM Power System L1024 (9786-42H) 7) IBM Power System E1050 (9043-MRX) 8) IBM Power System S1012 (9028-21B) The images mentioned above can be located at IBM Fix Central : https://www.ibm.com/support/fixcentral/

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 24, 2026

Sources and claim methodology

Source referenceibm.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.