---
id: CVE-2026-81886
title: radare2 is a UNIX-like reverse engineering framework and command-line toolset
summary: >-
  radare2 is a UNIX-like reverse engineering framework and command-line toolset.
  Prior to 6.2.0, radare2's Windows 64-bit crash-dump dmp64 parser was
  vulnerable because the Windows dmp64 parser used an input-controlled
  physical-memory-run …
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
vendor: radareorg
product: radare2
affected:
  - radare2 < 6.2.0
published: '2026-09-22'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:28:25.093'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-81886'
references:
  - url: >-
      https://github.com/radareorg/radare2/commit/a7519fdb4da6835c2cecd8fe248e7dd1133cf17a
    label: security-advisories@github.com
  - url: 'https://github.com/radareorg/radare2/issues/26224'
    label: security-advisories@github.com
  - url: 'https://github.com/radareorg/radare2/pull/26180'
    label: security-advisories@github.com
  - url: 'https://github.com/radareorg/radare2/releases/tag/6.2.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/radareorg/radare2/security/advisories/GHSA-3xrx-wh64-8xr8
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
epss: 0.00172
epssPercentile: 0.05788
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T17:33:05.317028Z'
ingestedAt: '2026-09-22T16:06:00.500Z'
---

## Overview

radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Windows 64-bit crash-dump dmp64 parser was vulnerable because the Windows dmp64 parser used an input-controlled physical-memory-run PageCount directly as the bound of a per-page allocation loop. The vulnerability is triggered by opening a small crafted full-memory Windows crash dump. The parser repeatedly allocated and appended page descriptors without validating the count against the dump size. This can cause denial of service through excessive memory consumption and processing time. This issue is fixed in version 6.2.0.

## Remediation

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