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CVE-2026-81627

8.2, high

Red Hat Enterprise Linux 10 Out-of-Bounds Write Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
8.2, high high CVSS v3.1
EPSS, next 30 days
0.2% higher than 8.2% of scored CVEs
Exploitation
No public evidence
Published
18 Sept 202629 days ago

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.

Details

Vendor
Red Hat
Product
Red Hat Enterprise Linux 10
Weakness
CWE-787 (opens in a new tab)
Status
Awaiting analysis
Updated
21 Sept 2026
Assigner
secalert@redhat.com

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References 3

Advisories 1

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Red Hat CVEs

Every Red Hat CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2021-3560 Red Hat Polkit Incorrect Authorization Vulnerability KEV EPSS 24% 7.8, high
  • CVE-2021-4034 Red Hat Polkit Out-of-Bounds Read and Write Vulnerability KEV EPSS 95% 7.8, high
  • CVE-2018-14667 Red Hat JBoss RichFaces Framework Expression Language Injection Vulnerability KEV EPSS 74% 9.8, critical
  • CVE-2017-12149 Red Hat JBoss Application Server Remote Code Execution Vulnerability KEV EPSS 91% 9.8, critical
  • CVE-2015-5287 Red Hat Automatic Bug Reporting Tool Privilege Escalation Vulnerability KEV EPSS 5% 7.8, high
  • CVE-2015-3246 Red Hat Libuser Race Condition Vulnerability KEV EPSS 9% 7.4, high
  • CVE-2010-1871 Red Hat Linux JBoss Seam 2 Remote Code Execution Vulnerability KEV EPSS 83% 8.8, high
  • CVE-2010-0738 Red Hat JBoss Authentication Bypass Vulnerability KEV EPSS 75% 5.3, medium

Beyond this page

Is CVE-2026-81627 in your network?

This page tells you how dangerous CVE-2026-81627 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.