CVE-2026-4932
This Power System update is being released to address Insufficient Entropy
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
This Power System update is being released to address Insufficient Entropy
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.
- Record
CVE-2026-4932- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-331
- Updated
- 2026-11-02
EUVDEUVD-2026-49954
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.
- Record
EUVD-2026-49954- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-4hx2-qrcw-x8xr
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow...
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.
- Record
GHSA-4hx2-qrcw-x8xr- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-331
- Updated
- 2026-11-02
NVD
IBM PowerVM Hypervisor FW1110.00 through FW1110.20, and FW1060.00 through FW1060.71 could allow an attacker with physical access to the Transparent Memory Encryption (TME) hardware to decrypt encrypted memory due to insufficient cryptographic entropy.
- Record
CVE-2026-4932- CVSS 3.1
- 4.2 Medium
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-331
- Updated
- 2026-11-02
Affected products
- ibm powervm hypervisor
- ibm power system e1050 \(9043-mrx\) firmware
- ibm power system e1080 \(9080-hex\) firmware
- ibm power system e1150 \(9043-mru\) firmware
- ibm power system e1180 \(9080-heu\) firmware
- ibm power system l1022 \(9786-22h\) firmware
- ibm power system l1024 \(9786-42h\) firmware
- ibm power system l1122 \(9856-22h\) firmware
- ibm power system l1124 \(9856-42h\) firmware
- ibm power system s1012 \(9028-21b\) firmware
- ibm power system s1014 \(9105-41b\) firmware
- ibm power system s1022 \(9105-22a\) firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-4932 is a medium vulnerability (CVSS 4.2) in Ibm Powervm Hypervisor, published July 28, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.11%, the 1st percentile. No source names a fixed version.