---
id: CVE-2025-66866
title: >-
  An issue was discovered in function d_abi_tags in file cp-demangle.c in
  BinUtils 2.26 allows attackers to cause a denial of service via crafted PE
  file.
summary: >-
  An issue was discovered in function d_abi_tags in file cp-demangle.c in
  BinUtils 2.26 allows attackers to cause a denial of service via crafted PE
  file.
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-20
vendor: gnu
product: binutils
affected:
  - binutils = 2.26
published: '2025-12-29'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T10:10:00.193'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-66866'
references:
  - url: 'https://github.com/caozhzh/CRGF-Vul/blob/main/cxxfilt/crash6.md'
    label: cve@mitre.org
  - url: 'https://github.com/caozhzh/CRGF-Vul/blob/main/cxxfilt/crash6.md'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00311
epssPercentile: 0.22131
ingestedAt: '2026-10-13T10:22:03.531Z'
---

## Overview

An issue was discovered in function d_abi_tags in file cp-demangle.c in BinUtils 2.26 allows attackers to cause a denial of service via crafted PE file.

## Affected

- `binutils = 2.26`

## Remediation

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