---
id: CVE-2025-11573
title: >-
  An infinite loop issue in Amazon.IonDotnet library versions <v1.3.2 may allow
  a threat actor to cause a denial of service through a specially crafted text
  input.


  To mitigate this issue, users should upgrade to version v1.3.2
summary: >-
  An infinite loop issue in Amazon.IonDotnet library versions <v1.3.2 may allow
  a threat actor to cause a denial of service through a specially crafted text
  input.


  To mitigate this issue, users should upgrade to version v1.3.2. As of Augu…
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-1286
published: '2025-10-09'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T13:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-11573'
references:
  - url: 'https://aws.amazon.com/security/security-bulletins/AWS-2025-022/'
    label: ff89ba41-3aa1-4d27-914a-91399e9639e5
  - url: 'https://github.com/amazon-ion/ion-dotnet/releases/tag/v1.3.2'
    label: ff89ba41-3aa1-4d27-914a-91399e9639e5
  - url: >-
      https://github.com/amazon-ion/ion-dotnet/security/advisories/GHSA-q5r6-9qwq-g2wj
    label: ff89ba41-3aa1-4d27-914a-91399e9639e5
tags:
  - nvd
epss: 0.00435
epssPercentile: 0.35773
ingestedAt: '2026-10-08T13:42:55.056Z'
---

## Overview

An infinite loop issue in Amazon.IonDotnet library versions <v1.3.2 may allow a threat actor to cause a denial of service through a specially crafted text input.

To mitigate this issue, users should upgrade to version v1.3.2. As of August 20, 2025, this library has been deprecated and will not receive further updates.

## Remediation

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