CVE-2026-50647: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') in Microsoft Windows 10 Version 1607
CVE-2026-50647 is a high-severity vulnerability in Microsoft Windows 10 Version 1607 involving an infinite loop in Active Directory Federation Services (AD FS). This flaw allows an unauthorized attacker to cause a denial of service over the network by triggering a loop with an unreachable exit condition. An official patch is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50647) is classified as CWE-835 (Loop with Unreachable Exit Condition) and affects Active Directory Federation Services in Windows 10 Version 1607 (build 10.0.14393.0). The issue causes an infinite loop that can be exploited by an unauthorized attacker remotely to deny service. The CVSS 3.1 base score is 7.5, indicating high severity, with network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability (denial of service). Microsoft has published an official fix for this vulnerability.
Potential Impact
An attacker can remotely exploit this vulnerability to cause a denial of service condition on affected systems running Windows 10 Version 1607 by triggering an infinite loop in AD FS. This results in service disruption but does not impact confidentiality or integrity.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50647 to remediate this vulnerability.
CVE-2026-50647: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') in Microsoft Windows 10 Version 1607
Description
CVE-2026-50647 is a high-severity vulnerability in Microsoft Windows 10 Version 1607 involving an infinite loop in Active Directory Federation Services (AD FS). This flaw allows an unauthorized attacker to cause a denial of service over the network by triggering a loop with an unreachable exit condition. An official patch is available from Microsoft to address this issue.
CVSS v3.1
Score 7.5high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50647) is classified as CWE-835 (Loop with Unreachable Exit Condition) and affects Active Directory Federation Services in Windows 10 Version 1607 (build 10.0.14393.0). The issue causes an infinite loop that can be exploited by an unauthorized attacker remotely to deny service. The CVSS 3.1 base score is 7.5, indicating high severity, with network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to availability (denial of service). Microsoft has published an official fix for this vulnerability.
Potential Impact
An attacker can remotely exploit this vulnerability to cause a denial of service condition on affected systems running Windows 10 Version 1607 by triggering an infinite loop in AD FS. This results in service disruption but does not impact confidentiality or integrity.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50647 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: 07/14/2026, 22:49:16 UTC
Last updated: 07/15/2026, 03:27:22 UTC
Views: 2
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