Vulnerability · Published Aug 19, 2026 · Assigned by ibm
CVE-2026-4937Power System Insufficient Entropy
Medium 5.3
In plain English
A medium-severity security flaw in PowerVM Hypervisor from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.1%top 97.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | PowerVM Hypervisor | FW1110.00 – through FW1110.20FW1060.00 – through FW1060.71FW950.00 – through FW950.H2 |
Weakness: CWE-331 · Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
References
- https://www.ibm.com/support/pages/node/7283900 vendor-advisory, patch