CVE-2026-18849

Analyzed Analyzed - Analysis Complete

Authenticated Code Execution in IBM OpenBMC Firmware

Publication date: 2026-08-19

Last updated on: 2026-09-02

Assigner: IBM Corporation

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-19

Last Modified

2026-09-02

Generated

2026-09-09

AI Q&A

2026-08-20

EPSS Evaluated

2026-09-07

NVD

CVE-2026-18849

EUVD

EUVD-2026-62849

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	openbmc	From fw1060.00 (inc) to fw1060.80 (inc)
ibm	power_system_e1050_(9043-mrx)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_l1022_(9786-22h)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_l1024_(9786-42h)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1012_(9028-21b)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1014_(9105-41b)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1022_(9105-22a)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1022s_(9105-22b)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)
ibm	power_system_s1024_(9105-42a)_firmware	From fw1060.00 (inc) to fw1060.81 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-22	The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

Executive Summary

This vulnerability affects IBM OpenBMC firmware versions FW1060.00 through FW1060.80. An attacker with authenticated administrator-level access to the BMC can exploit a flaw in the firmware update process to execute arbitrary code. This leads to potential impacts on confidentiality, integrity, and availability of the system.

Detection Guidance

Detection requires checking the BMC firmware version. Use the BMC web interface or run commands like 'ipmitool mc info' or 'bmc-info' to verify the firmware version is not between FW1060.00 and FW1060.80.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run unauthorized code on your system, potentially leading to data breaches, system manipulation, or denial of service. Since it requires administrator access, the risk is higher if credentials are compromised.

Compliance Impact

This vulnerability could impact compliance with GDPR and HIPAA due to its potential to compromise confidentiality, integrity, and availability of data. Unauthorized code execution by an authenticated attacker may lead to unauthorized access or disclosure of sensitive data, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information.

Mitigation Strategies

Immediately update the BMC firmware to a version beyond FW1060.80. Ensure only trusted administrators have access to the BMC interface. Monitor for unauthorized changes or activity.

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