---
id: CVE-2025-51678
title: An issue was discovered in RISC-V PicoRV32 commit 87c89a
summary: >-
  An issue was discovered in RISC-V PicoRV32 commit 87c89a. A mismatch in the
  PCPI INSN and memory address can lead to unexpected behavior.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-119
  - CWE-704
published: '2026-07-17'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T09:10:00.323'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-51678'
references:
  - url: 'https://github.com/YosysHQ/picorv32/issues/269'
    label: cve@mitre.org
  - url: 'https://mason.gmu.edu/~rsaravan/projects/synfuzz/cve/cve.html'
    label: cve@mitre.org
  - url: 'https://www.arxiv.org/abs/2504.18812'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00609
epssPercentile: 0.47673
ingestedAt: '2026-10-13T09:20:23.174Z'
---

## Overview

An issue was discovered in RISC-V PicoRV32 commit 87c89a. A mismatch in the PCPI INSN and memory address can lead to unexpected behavior.

## Remediation

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