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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00117.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Amazon Amazon.IonDotnet unaffected
Version Status Constraints
0 affected
< 1.3.2

No data.

No data.

Vendor Product Confidence Versions
Amazon Ion — —

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-q5r6-9qwq-g2wj Amazon.IonDotnet is vulnerable to Denial of Service attacks
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://aws.amazon.com/security/security-bulletins/AWS-2025-022/ cve-icon cve-icon
https://github.com/amazon-ion/ion-dotnet/releases/tag/v1.3.2 cve-icon cve-icon
https://github.com/amazon-ion/ion-dotnet/security/advisories/GHSA-q5r6-9qwq-g2wj cve-icon cve-icon
History

Fri, 10 Oct 2025 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Amazon
Amazon ion
Vendors & Products Amazon
Amazon ion

Thu, 09 Oct 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 09 Oct 2025 18:15:00 +0000

Type Values Removed Values Added
References

Thu, 09 Oct 2025 18:00:00 +0000

Type Values Removed Values Added
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.
Title Denial of Service issue in Amazon.IonDotnet
Weaknesses CWE-1286
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 8.7, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: AMZN

Published:

Updated: 2025-10-09T19:34:39.743Z

Reserved: 2025-10-09T17:32:12.383Z

Link: CVE-2025-11573

cve-icon Vulnrichment

Updated: 2025-10-09T19:34:36.875Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-10-09T18:15:49.543

Modified: 2025-10-14T19:37:28.107

Link: CVE-2025-11573

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-10-10T11:17:41Z

Weaknesses