---
id: CVE-2026-67846
title: >-
  Berkeley Out-of-Order Machine (BOOM) commit
  5223e44cfeb26f41380057a2eb4d651197475f69 contains a potential incorrect
  privilege assignment issue in the v3 and v4 NBDTLB implementations
summary: >-
  Berkeley Out-of-Order Machine (BOOM) commit
  5223e44cfeb26f41380057a2eb4d651197475f69 contains a potential incorrect
  privilege assignment issue in the v3 and v4 NBDTLB implementations. The raw
  mstatus.SUM value participates in the read an…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-266
published: '2026-08-18'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T16:04:24.933'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67846'
references:
  - url: 'https://github.com/duan528/CVE-2026-67846-BOOM-NBDTLB'
    label: cve@mitre.org
  - url: 'https://github.com/riscv-boom/riscv-boom'
    label: cve@mitre.org
  - url: >-
      https://github.com/riscv-boom/riscv-boom/commit/5223e44cfeb26f41380057a2eb4d651197475f69
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00155
epssPercentile: 0.03848
ingestedAt: '2026-08-22T13:32:36.858Z'
---

## Overview

Berkeley Out-of-Order Machine (BOOM) commit 5223e44cfeb26f41380057a2eb4d651197475f69 contains a potential incorrect privilege assignment issue in the v3 and v4 NBDTLB implementations. The raw mstatus.SUM value participates in the read and write permission logic without an explicit local satp.MODE validity check at the use site

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.