CVE-2025-11573
C# vulnerability analysis and mitigation

Overview

Amazon.IonDotnet, a library used for reading and writing Amazon Ion data in the .NET environment, was found to contain an infinite loop vulnerability identified as CVE-2025-11573. The issue affects versions prior to v1.3.2 and was publicly disclosed on October 9, 2025 (AWS Bulletin).

Technical details

The vulnerability manifests as an infinite loop issue during text parsing of lobs and strings in the Amazon.IonDotnet library. This technical flaw was addressed in version 1.3.2 of the library (GitHub Release).

Impact

When exploited, the vulnerability can cause a denial of service condition by triggering an infinite loop in the application, potentially rendering the service unresponsive (AWS Bulletin).

Mitigation and workarounds

Users are advised to upgrade to Amazon.IonDotnet version 1.3.2 or later, which contains the fix for the infinite loop bugs in text parsing of lobs and strings (GitHub Release).

Additional resources


SourceThis report was generated using AI

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