Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-81627
Red Hat Red Hat Enterprise Linux 10 — Qemu-kvm: vapic writable rom alias can escape the option-rom window and expose locked smram
AV AC PR UI S C I A CVSS EPSS %ile KEV
L L H N C H H H 8.2 .0019 8.0 —
AFFECTED
Product Versions Fixed
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
Red Hat Enterprise Linux for NVIDIA 26 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
Red Hat OpenShift Container Platform 4 unspecified —
+ 1 more
TIMELINE
Aug 27 Reserved by redhat
Sep 18 Published (CNA: redhat)
Sep 21 RESCORED — CVE-2026-81627 (Red Hat Enterprise Linux 10). CVSS 6.7 → 8.2 (NVD).
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| August 27, 2026 | Reserved | Reserved by redhat |
| September 18, 2026 | Published | Published (CNA: redhat) |
| September 21, 2026 | RESCORED | RESCORED — CVE-2026-81627 (Red Hat Enterprise Linux 10). CVSS 6.7 → 8.2 (NVD). |
Affected
Affected products and packages — 11 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
| Red Hat | Red Hat Enterprise Linux for NVIDIA 26 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | — |
| Red Hat | Red Hat OpenStack Platform 13 (Queens) | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-81627 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
