CVE-2026-42899: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') in Microsoft .NET 10.0
Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-42899) is classified as CWE-835, indicating a loop with an unreachable exit condition resulting in an infinite loop within ASP.NET Core in Microsoft .NET 10.0. The infinite loop can be exploited remotely without authentication, leading to denial of service by exhausting system resources or causing the application to become unresponsive. The CVSS v3.1 base score is 7.5 (high), reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An attacker can remotely trigger an infinite loop in ASP.NET Core running on .NET 10.0, causing a denial of service condition that disrupts application availability. There is no impact on confidentiality or integrity. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42899 to remediate this vulnerability.
CVE-2026-42899: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') in Microsoft .NET 10.0
Description
Loop with unreachable exit condition ('infinite loop') in ASP.NET Core allows an unauthorized attacker to deny service over a network.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-42899) is classified as CWE-835, indicating a loop with an unreachable exit condition resulting in an infinite loop within ASP.NET Core in Microsoft .NET 10.0. The infinite loop can be exploited remotely without authentication, leading to denial of service by exhausting system resources or causing the application to become unresponsive. The CVSS v3.1 base score is 7.5 (high), reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An attacker can remotely trigger an infinite loop in ASP.NET Core running on .NET 10.0, causing a denial of service condition that disrupts application availability. There is no impact on confidentiality or integrity. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42899 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T22:35:54.967Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42899","vendor":"Microsoft"}]
Threat ID: 6a036564cbff5d861008cca2
Added to database: 5/12/2026, 5:37:40 PM
Last enriched: 5/12/2026, 6:06:28 PM
Last updated: 5/13/2026, 4:52:18 AM
Views: 3
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