Buffer overflow in IBM Power Firmware
CVE-2026-19234
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.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (5.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 6th percentile — 5.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.000
Affected products
- IBM Power Firmware — versions FW1120.00
- IBM Power System E1050 \(9043-Mrx\) Firmware
- IBM Power System E1080 \(9080-Hex\) Firmware
- IBM Power System E1150 \(9043-Mru\) Firmware — versions fw1120.00
- IBM Power System E1180 \(9080-Heu\) Firmware — versions fw1120.00
- IBM Power System L1022 \(9786-22h\) Firmware
- IBM Power System L1024 \(9786-42h\) Firmware
- IBM Power System L1122 \(9856-22h\) Firmware — versions fw1120.00
- IBM Power System L1124 \(9856-42h\) Firmware — versions fw1120.00
- IBM Power System S1012 \(9028-21b\) Firmware
Weakness classification (CWE)
References
- www.ibm.com/support/pages/node/7283221 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-19234?
- CVE-2026-19234 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-2026-19234?
- High severity. CVSS v3 base score is 8.2 out of 10.