What is CVE-2026-11885?

CVE-2026-11885 is a high-severity vulnerability in Ibm Powervm Hypervisor, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-07-30.

How severe is CVE-2026-11885?

High severity. CVSS v3 base score is 8.4 out of 10.

Buffer overflow in Ibm Powervm Hypervisor

CVE-2026-11885

IBM PowerVM Hypervisor FW1110.00 through FW1110.20, FW1060.00 through FW1060.71, and FW950.00 through FW950.H1 A carefully crafted OS hypervisor call can cause the PowerVM hypervisor to crash or compromise OS memory integrity.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H.

Affected products

Ibm Powervm Hypervisor — versions FW1110.00, FW1060.00, FW950.00

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-11885?: CVE-2026-11885 is a high-severity vulnerability in Ibm Powervm Hypervisor, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-07-30.
How severe is CVE-2026-11885?: High severity. CVSS v3 base score is 8.4 out of 10.