Buffer overflow in IBM Power Firmware
CVE-2026-17494
IBM Power Systems Firmware FW1120.00, and FW1110.00 through FW1110.30 is affected by a vulnerability in the interface between the BMC and the host system. An attacker with service access to the BMC can send a specially crafted command, allowing arbitrary code to be executed on the host system, giving full control over the host system and all hosted partitions, resulting in a confidentiality, integrity, and availability impact.
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Ibm Power Firmware — versions FW1120.00
- Ibm Power Systems Firmware — versions FW1120.00
Weakness classification (CWE)
References
- psirt@us.ibm.com (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2026-17494?
- CVE-2026-17494 is a high-severity vulnerability in IBM Power Firmware, classified under Stack-based Buffer Overflow. CVSS score: 8.2/10. Published 2026-08-19.
- How severe is CVE-2026-17494?
- High severity. CVSS v3 base score is 8.2 out of 10.