CVE-2026-19234: CWE-121 Stack-based Buffer Overflow in IBM Power Systems Firmware
A stack-based buffer overflow vulnerability (CWE-121) exists in IBM Power Systems Firmware versions FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80. The flaw occurs 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, potentially leading to arbitrary code execution on the host system. This can impact confidentiality, integrity, and availability of the affected system.
AI Analysis
Technical Summary
CVE-2026-19234 is a stack-based buffer overflow vulnerability in IBM Power Systems Firmware affecting specific firmware versions. The vulnerability lies in the host firmware boot process image validation path. Exploitation requires service access to the service processor, allowing an attacker to provide a malicious code update image. Successful exploitation enables arbitrary code execution on the host system, compromising confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability could lead to full compromise of the host system, including unauthorized code execution with high privileges. This impacts confidentiality, integrity, and availability of the system, potentially allowing an attacker to control or disrupt the affected host.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict service processor access to trusted administrators only to reduce risk.
CVE-2026-19234: CWE-121 Stack-based Buffer Overflow in IBM Power Systems Firmware
Description
A stack-based buffer overflow vulnerability (CWE-121) exists in IBM Power Systems Firmware versions FW1120.00, FW1110.00 through FW1110.30, and FW1060.00 through FW1060.80. The flaw occurs 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, potentially leading to arbitrary code execution on the host system. This can impact confidentiality, integrity, and availability of the affected system.
CVSS v3.1
Score 8.2high
Affected software
IBM
Power Systems Firmware
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-19234 is a stack-based buffer overflow vulnerability in IBM Power Systems Firmware affecting specific firmware versions. The vulnerability lies in the host firmware boot process image validation path. Exploitation requires service access to the service processor, allowing an attacker to provide a malicious code update image. Successful exploitation enables arbitrary code execution on the host system, compromising confidentiality, integrity, and availability.
Potential Impact
Successful exploitation of this vulnerability could lead to full compromise of the host system, including unauthorized code execution with high privileges. This impacts confidentiality, integrity, and availability of the system, potentially allowing an attacker to control or disrupt the affected host.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Until a patch is available, restrict service processor access to trusted administrators only to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-08-07T11:24:51.144Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a85f48cacd9273b497242ca
Added to database: 08/19/2026, 18:23:08 UTC
Last enriched: 09/11/2026, 07:02:41 UTC
Last updated: 10/02/2026, 10:26:54 UTC
Views: 68
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.