Buffer overflow in IBM Power System E1080 \(9080-Hex\) Firmware
CVE-2026-16687
IBM Power Systems Firmware FW1120.00, FW1110.00 through FW1110.30, FW1060.00 through FW1060.80, and FW950.00 through FW950.H2 is affected by a vulnerability in the ASMI web interface. An unauthenticated attacker with network access can send the FSP a malformed request, allowing arbitrary code execution, giving the attacker full control over the managed system, resulting in a confidentiality, integrity, and availability impact.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (26.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- IBM Power System E1080 \(9080-Hex\) Firmware
- IBM Power System E1180 \(9080-Heu\) Firmware — versions fw1120.00
- IBM Power System E950 \(9040-Mr9\) Firmware
- IBM Power System E980 \(9080-M9s\) Firmware
- IBM Power System H922 \(9223-22s\) Firmware
- IBM Power System H924 \(9223-42s\) Firmware
- IBM Power System S914 \(9009-41g\) Firmware
- IBM Power System S922 \(9009-22g\) Firmware
- IBM Power System S924 \(9009-42g\) Firmware
- IBM Power Systems Firmware — versions FW1120.00
Weakness classification (CWE)
References
- www.ibm.com/support/pages/node/7283893 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-16687?
- CVE-2026-16687 is a critical-severity vulnerability in IBM Power System E1080 \(9080-Hex\) Firmware, classified under Stack-based Buffer Overflow. CVSS score: 9.6/10. Published 2026-08-19.
- How severe is CVE-2026-16687?
- Critical severity. CVSS v3 base score is 9.6 out of 10.