---
id: CVE-2025-61725
title: >-
  The ParseAddress function constructs domain-literal address components through
  repeated string concatenation
summary: >-
  The ParseAddress function constructs domain-literal address components through
  repeated string concatenation. When parsing large domain-literal components,
  this can cause excessive CPU consumption.
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'
published: '2025-10-29'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T10:10:00.227'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-61725'
references:
  - url: 'https://go.dev/cl/709860'
    label: security@golang.org
  - url: 'https://go.dev/issue/75680'
    label: security@golang.org
  - url: 'https://groups.google.com/g/golang-announce/c/4Emdl2iQ_bI'
    label: security@golang.org
  - url: 'https://pkg.go.dev/vuln/GO-2025-4006'
    label: security@golang.org
  - url: 'http://www.openwall.com/lists/oss-security/2025/10/08/1'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00647
epssPercentile: 0.49415
ingestedAt: '2026-10-08T10:28:17.967Z'
---

## Overview

The ParseAddress function constructs domain-literal address components through repeated string concatenation. When parsing large domain-literal components, this can cause excessive CPU consumption.

## Remediation

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