CVE-2026-50647: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') in Microsoft Microsoft .NET Framework 3.5 AND 4.7.2
Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50647) affects Microsoft .NET Framework versions 3.5 through 4.7.2 and is classified under CWE-835 (Loop with Unreachable Exit Condition). It occurs in Active Directory Federation Services (AD FS) where an infinite loop can be triggered, leading to denial of service. The flaw allows an unauthenticated attacker to cause service disruption remotely. Microsoft has published an official fix to address this issue.
Potential Impact
An attacker can exploit this vulnerability to cause a denial of service (DoS) by triggering an infinite loop in AD FS, making the service unavailable over the network. There is no impact on confidentiality or integrity, but availability is severely affected.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the patch provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50647 to remediate this vulnerability.
CVE-2026-50647: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') in Microsoft Microsoft .NET Framework 3.5 AND 4.7.2
Description
Loop with unreachable exit condition ('infinite loop') in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50647) affects Microsoft .NET Framework versions 3.5 through 4.7.2 and is classified under CWE-835 (Loop with Unreachable Exit Condition). It occurs in Active Directory Federation Services (AD FS) where an infinite loop can be triggered, leading to denial of service. The flaw allows an unauthenticated attacker to cause service disruption remotely. Microsoft has published an official fix to address this issue.
Potential Impact
An attacker can exploit this vulnerability to cause a denial of service (DoS) by triggering an infinite loop in AD FS, making the service unavailable over the network. There is no impact on confidentiality or integrity, but availability is severely affected.
Mitigation Recommendations
An official fix is available from Microsoft. Users should apply the patch provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50647 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-05T14:33:50.830Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50647","vendor":"Microsoft"}]
Threat ID: 6a5676a968715ace43f096d4
Added to database: 07/14/2026, 17:49:29 UTC
Last enriched: 08/13/2026, 15:09:27 UTC
Last updated: 08/26/2026, 23:28:13 UTC
Views: 70
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