CVE-2025-11573Denial of Service issue in Amazon.IonDotnet

Description

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.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/amazon-ion/ion-dotnet/releases/tag/v1.3.2 patchproduct
• https://aws.amazon.com/security/security-bulletins/AWS-2025-022/ vendor-advisory
• https://github.com/amazon-ion/ion-dotnet/security/advisories/GHSA-q5r6-9qwq-g2wj third-party-advisory