CVE-2026-81627

highpriority · track · 33EPSS 0.002 · 9 %ileDEUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.19% (9th) EPSS
CVSS 8.2 · high
Is it mine?
4 products
Check your exposure
Who says so?
1 sources
cert_bund

EPSS · scored 2026-10-26

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

8.2
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.2highCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:Hprimary · secalert@redhat.com USexploitability 1.5 · impact 6
v3.17.5highCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787US
04

affected products (4)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-3456QEMU: Schwachstelle ermöglicht CodeausführungDeutsch2026-09-17csaf · cert_bundDE

    Ein lokaler Angreifer kann eine Schwachstelle in QEMU ausnutzen, um beliebigen Programmcode auszuführen.

06

sources

Which sources assert this record, and when.

cert_bundNVDCVE.orgMITRE
published 2026-09-18modified 2026-09-21
07

references (3) nvd

External citations — patches, advisories, analysis.

scry

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