{"id":"CVE-2026-50653","aliases":[],"cve":{"records":[{"id":"CVE-2026-50653","source":"microsoft","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-06-05T14:33:50.831Z","published":"2026-07-14T17:05:39.461Z","modified":"2026-10-28T20:02:18.690Z"}],"publishers":[{"name":"microsoft","role":"CNA","organizationId":"f38d906d-7342-40ea-92c1-6c4a2c6478c8","modified":"2026-10-28T20:02:18.690Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-07-14T20:48:11.965Z"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50653","tags":["vendor-advisory","patch"],"source":"microsoft"}],"weaknesses":[{"id":"CWE-835","description":"CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')","source":"microsoft"},{"id":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","source":"microsoft"}],"applicability":[{"source":"microsoft","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:azure_active_directory:*:*:*:*:*:*:*:*","versionStartIncluding":"2021","versionEndExcluding":"8.19.2"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*","versionStartIncluding":"3.5.0","versionEndExcluding":"2.0.50727.9182 & 3.0.30729.9168"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8.0.0","versionEndExcluding":"4.8.9340.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8.0","versionEndExcluding":"4.8.4803.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8.0","versionEndExcluding":"2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7.0","versionEndExcluding":"2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*","versionStartIncluding":"4.7.0","versionEndExcluding":"4.7.4143.0"},{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*","versionStartIncluding":"4.8.1","versionEndExcluding":"2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-07-14T20:37:40.854539Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"yes"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Azure Active Directory Denial of Service Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","description":"Loop with unreachable exit condition ('infinite loop') in Azure Active Directory allows an unauthorized attacker to deny service over a network.","score":7.5,"severity":"high","published":"2026-07-14T17:05:39.461Z","modified":"2026-10-28T20:02:18.690Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Microsoft","name":"Azure Active Directory","platforms":[],"versions":[{"version":"2021","status":"affected","lessThan":"8.19.2","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5","platforms":["Windows 11 Version 26H1 for ARM64-based Systems","Windows 11 version 26H1 for x64-based Systems","Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)"],"versions":[{"version":"3.5.0","status":"affected","lessThan":"2.0.50727.9182 & 3.0.30729.9168","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5 AND 4.7.2","platforms":["Windows 10 Version 1607 for 32-bit Systems","Windows 10 Version 1607 for x64-based Systems","Windows 10 Version 1809 for 32-bit Systems","Windows 10 Version 1809 for x64-based Systems","Windows Server 2016","Windows Server 2016 (Server Core installation)","Windows Server 2019","Windows Server 2019 (Server Core installation)"],"versions":[{"version":"4.7.0","status":"affected","lessThan":"2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5 AND 4.8","platforms":["Windows 10 Version 1809 for 32-bit Systems","Windows 10 Version 1809 for x64-based Systems","Windows 10 Version 21H2 for 32-bit Systems","Windows 10 Version 21H2 for ARM64-based Systems","Windows 10 Version 21H2 for x64-based Systems","Windows 10 Version 22H2 for 32-bit Systems","Windows 10 Version 22H2 for ARM64-based Systems","Windows 10 Version 22H2 for x64-based Systems","Windows Server 2019","Windows Server 2019 (Server Core installation)","Windows Server 2022","Windows Server 2022 (Server Core installation)"],"versions":[{"version":"4.8.0","status":"affected","lessThan":"2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 3.5 AND 4.8.1","platforms":["Windows 10 Version 21H2 for 32-bit Systems","Windows 10 Version 21H2 for ARM64-based Systems","Windows 10 Version 21H2 for x64-based Systems","Windows 10 Version 22H2 for 32-bit Systems","Windows 10 Version 22H2 for ARM64-based Systems","Windows 10 Version 22H2 for x64-based Systems","Windows 11 Version 23H2 for ARM64-based Systems","Windows 11 Version 23H2 for x64-based Systems","Windows 11 Version 24H2 for ARM64-based Systems","Windows 11 Version 24H2 for x64-based Systems","Windows 11 Version 25H2 for ARM64-based Systems","Windows 11 Version 25H2 for x64-based Systems","Windows Server 2022","Windows Server 2022 (Server Core installation)"],"versions":[{"version":"4.8.1","status":"affected","lessThan":"2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2","platforms":["Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)"],"versions":[{"version":"4.7.0","status":"affected","lessThan":"4.7.4143.0","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 4.8","platforms":["Windows 10 Version 1607 for 32-bit Systems","Windows 10 Version 1607 for x64-based Systems","Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)","Windows Server 2016","Windows Server 2016 (Server Core installation)"],"versions":[{"version":"4.8.0","status":"affected","lessThan":"4.8.4803.0","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"},{"vendor":"Microsoft","name":"Microsoft .NET Framework 4.8.1","platforms":["Windows 11 Version 26H1 for ARM64-based Systems","Windows 11 version 26H1 for x64-based Systems"],"versions":[{"version":"4.8.0.0","status":"affected","lessThan":"4.8.9340.0","versionType":"custom"}],"cpes":[],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"}],"remediation":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50653"],"sources":[{"name":"CVE","id":"CVE-2026-50653","modified":"2026-10-28T20:02:18.690Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","score":7.5}],"sourceAffected":[],"observedAt":"2026-10-29T14:39:26.858Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T08:50:32.230Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[],"aiSummary":{"text":"Azure Active Directory and Microsoft .NET Framework versions have a loop with an unreachable exit condition, allowing an unauthorized attacker to deny service over a network. Affected versions include Azure Active Directory 2021 before 8.19.2 and various .NET Framework versions. The vulnerability may cause uncontrolled resource consumption.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:08:33.380Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-50653"}]}}