Vulnerability in IBM Power System E1050 \(9043-Mrx\) Firmware
CVE-2026-4937
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H2 could allow a local attacker with administrative privileges to decrypt encrypted data due to certain hypervisor calls utilizing less entropy than requested.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.001 (2.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.3% 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: 0.001 · change: +0.000
Affected products
- 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 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 L1022 \(9786-22h\) Firmware
- IBM Power System L1024 \(9786-42h\) Firmware
Weakness classification (CWE)
References
- www.ibm.com/support/pages/node/7283900 (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-4937?
- CVE-2026-4937 is a medium-severity vulnerability in IBM Power System E1050 \(9043-Mrx\) Firmware, classified under Insufficient Entropy. CVSS score: 5.3/10. Published 2026-08-19.
- How severe is CVE-2026-4937?
- Medium severity. CVSS v3 base score is 5.3 out of 10.