# CVE-2025-11573

## Summary

- **CVE ID:** CVE-2025-11573
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-1286
- **Published:** Oct 9, 2025
- **Last Modified:** Mar 12, 2026

## 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.

## Affected Products

- Amazon — Amazon.IonDotnet (0)

## References

- [CNA](https://github.com/amazon-ion/ion-dotnet/releases/tag/v1.3.2)
- [CNA](https://aws.amazon.com/security/security-bulletins/AWS-2025-022/)
- [CNA](https://github.com/amazon-ion/ion-dotnet/security/advisories/GHSA-q5r6-9qwq-g2wj)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.43%
- **EPSS Percentile:** 36.7

---
_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._