CVSS 3.1
8.2 highCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:HCVE-2026-81627
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-30)
- CWE
- CWE-787
- Published
- Modified
- Record from
- the NVD, synced