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CVE-2026-18857— This Power System update is being released to address

Quick assessment

Affected
IBM OPENBMC
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM OPENBMC 固件版本 FW1120.00 至 FW1120.01、FW1110.00 至 FW1110.31，以及 FW1060.00 至 FW1060.81 受 BMC 固件管理接口中的漏洞影响。主机系统可导致 BMC 固件管理服务崩溃，或允许读取少量 BMC 内部内存，从而对受管系统的机密性和可用性造成不利影响。

CVSS 3.4 · Low EPSS 0.11% · P1
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I. Basic Information for CVE-2026-18857

Vulnerability Information
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Vulnerability Title
This Power System update is being released to address
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM OPENBMC FW1120.00 ~ FW1120.01 cpe:2.3:a:ibm:openbmc:fw1120.00:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-18857

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III. Intelligence Information for CVE-2026-18857

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Vendor Advisories for CVE-2026-18857 (1)

Same Patch Batch · IBM · 2026-09-24 · 19 CVEs total

CVE-2026-81549 9.6 CRITICAL DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-82093 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-81552 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-81548 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-81547 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-81545 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-81539 8.8 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-77874 8.6 HIGH IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities
CVE-2026-82094 7.1 HIGH DataStage on Cloud Pak for Data has several vulnerabilities
CVE-2026-6544 6.2 MEDIUM Multiple Vulnerabilities in IBM Concert Software
CVE-2026-17413 5.1 MEDIUM This Power System update is being released to address
CVE-2026-17503 5.1 MEDIUM This Power System update is being released to address
CVE-2026-17504 5.1 MEDIUM This Power System update is being released to address
CVE-2026-77825 4.9 MEDIUM IBM ContextForge MCP Gateway is affected by path traversal
CVE-2026-18870 4.3 MEDIUM This Power System update is being released to address
CVE-2026-17511 3.4 LOW This Power System update is being released to address
CVE-2026-18104 3.3 LOW IBM Db2 Mirror for i is vulnerable to obtain sensitive information []
CVE-2026-19492 3.2 LOW This Power System update is being released to address

IV. Related Vulnerabilities

Same product: OPENBMC
Same vendor: IBM
Same weakness: CWE-125

V. Comments for CVE-2026-18857

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