CVE-2026-19234: CWE-121 Stack-based Buffer Overflow in IBM Power Systems Firmware
Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in the host firmware boot process image validation path. An attacker with service access to the service processor can supply a maliciously crafted code update image, allowing arbitrary code to be executed on the host system. Successful exploitation could result in a confidentiality, integrity, and availability impact to the affected host system.
AI Analysis
Technical Summary
CVE-2026-19234 is a stack-based buffer overflow vulnerability (CWE-121) in IBM Power Firmware's host firmware boot process image validation. The flaw allows an attacker with service processor access to provide a malicious code update image, resulting in arbitrary code execution on the host system. The vulnerability affects multiple firmware versions including FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80. The CVSS v3.1 base score is 8.2, indicating high severity with impacts on confidentiality, integrity, and availability. No official patch or remediation level has been disclosed yet.
Potential Impact
Successful exploitation allows arbitrary code execution on the host system, which can compromise confidentiality, integrity, and availability of the affected system. This means an attacker could potentially gain control over the host system, manipulate data, or disrupt operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict service processor access to trusted personnel only and monitor for unauthorized attempts to supply firmware updates.
CVE-2026-19234: CWE-121 Stack-based Buffer Overflow in IBM Power Systems Firmware
Description
Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80 is affected by a vulnerability in the host firmware boot process image validation path. An attacker with service access to the service processor can supply a maliciously crafted code update image, allowing arbitrary code to be executed on the host system. Successful exploitation could result in a confidentiality, integrity, and availability impact to the affected host system.
CVSS v3.1
Score 8.2high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19234 is a stack-based buffer overflow vulnerability (CWE-121) in IBM Power Firmware's host firmware boot process image validation. The flaw allows an attacker with service processor access to provide a malicious code update image, resulting in arbitrary code execution on the host system. The vulnerability affects multiple firmware versions including FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80. The CVSS v3.1 base score is 8.2, indicating high severity with impacts on confidentiality, integrity, and availability. No official patch or remediation level has been disclosed yet.
Potential Impact
Successful exploitation allows arbitrary code execution on the host system, which can compromise confidentiality, integrity, and availability of the affected system. This means an attacker could potentially gain control over the host system, manipulate data, or disrupt operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict service processor access to trusted personnel only and monitor for unauthorized attempts to supply firmware updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-07T11:24:51.144Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a85f48cacd9273b497242ca
Added to database: 08/19/2026, 18:23:08 UTC
Last enriched: 08/19/2026, 18:37:07 UTC
Last updated: 08/19/2026, 20:38:47 UTC
Views: 7
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