Status: UPDATED
| Advisory ID: CVE-2026-81627
Key Details
| CVE | CVE-2026-81627 |
| CVSS Score / Version | 8.2 (High) / CVSS v3.1 |
| Updated | 2026-09-21 |
| CVSS Vector | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
| CVSS Prose | attack vector is local; attack complexity is low; privileges required is high; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Affected products | see table below |
| Classified as | CWE-787 (Out-of-bounds Write) |
Affected Products, Subsystems & Sectors
| Subsystems | General OT |
| Sectors | Multiple |
What to Know
A flaw was found in QEMU. The VAPIC setup hypercall in hw/i386/vapic.c does not validate that the writable RAM alias remains within the option ROM window. A privileged guest user on a Q35/KVM machine can position this alias over locked SMRAM, bypassing chipset D_LCK protection and injecting code into System Management Mode memory. (NVD)
What to Do
Monitor Red Hat's web page for any future patch releases.
References