{ "document": { "acknowledgments": [ { "names": [ "thegoldmandm" ] } ], "aggregate_severity": { "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Public", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en-US", "notes": [ { "category": "general", "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle", "title": "Additional Resources" }, { "category": "legal_disclaimer", "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.", "title": "Disclaimer" }, { "category": "general", "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.", "title": "Customer Action" } ], "publisher": { "category": "vendor", "contact_details": "secure@microsoft.com", "name": "Microsoft Security Response Center", "namespace": "https://msrc.microsoft.com" }, "references": [ { "category": "self", "summary": "CVE-2026-70179 ASP.NET Core Elevation of Privilege Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70179" }, { "category": "self", "summary": "CVE-2026-70179 ASP.NET Core Elevation of Privilege Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-70179.json" }, { "category": "external", "summary": "Microsoft Exploitability Index", "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1" }, { "category": "external", "summary": "Microsoft Support Lifecycle", "url": "https://support.microsoft.com/lifecycle" }, { "category": "external", "summary": "Common Vulnerability Scoring System", "url": "https://www.first.org/cvss" } ], "title": "ASP.NET Core Elevation of Privilege Vulnerability", "tracking": { "current_release_date": "2026-10-15T07:00:00.000Z", "generator": { "date": "2026-10-29T00:18:54.532Z", "engine": { "name": "MSRC Generator", "version": "1.0" } }, "id": "msrc_CVE-2026-70179", "initial_release_date": "2026-10-13T07:00:00.000Z", "revision_history": [ { "date": "2026-10-13T07:00:00.000Z", "legacy_version": "1", "number": "1", "summary": "Information published." }, { "date": "2026-10-15T07:00:00.000Z", "legacy_version": "1.1", "number": "2", "summary": "Updated the Security Updates table to add download and KB article links for Microsoft Visual Studio. This is an informational change only; the fixed builds are unchanged." } ], "status": "final", "version": "2" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "<18.10.4", "product": { "name": "Microsoft Visual Studio 2026 version 18.10 <18.10.4", "product_id": "10" } }, { "category": "product_version", "name": "18.10.4", "product": { "name": "Microsoft Visual Studio 2026 version 18.10 18.10.4", "product_id": "21956" } } ], "category": "product_name", "name": "Microsoft Visual Studio 2026 version 18.10" }, { "branches": [ { "category": "product_version_range", "name": "<17.14.42", "product": { "name": "Microsoft Visual Studio 2022 version 17.14 <17.14.42", "product_id": "11" } }, { "category": "product_version", "name": "17.14.42", "product": { "name": "Microsoft Visual Studio 2022 version 17.14 17.14.42", "product_id": "16767" } } ], "category": "product_name", "name": "Microsoft Visual Studio 2022 version 17.14" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate <9.0.21", "product_id": "1" } }, { "category": "product_version", "name": "9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate 9.0.21", "product_id": "21962-20837" } } ], "category": "product_name", "name": "Microsoft.AspNetCore.Authentication.Negotiate" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate <9.0.21", "product_id": "2" } }, { "category": "product_version", "name": "9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate 9.0.21", "product_id": "21962-20839" } } ], "category": "product_name", "name": "Microsoft.AspNetCore.Authentication.Negotiate" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate <9.0.21", "product_id": "3" } }, { "category": "product_version", "name": "9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate 9.0.21", "product_id": "21962-20838" } } ], "category": "product_name", "name": "Microsoft.AspNetCore.Authentication.Negotiate" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate <9.0.21", "product_id": "4" } }, { "category": "product_version", "name": "9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate 9.0.21", "product_id": "21962-12414" } } ], "category": "product_name", "name": "Microsoft.AspNetCore.Authentication.Negotiate" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate <9.0.21", "product_id": "5" } }, { "category": "product_version", "name": "9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate 9.0.21", "product_id": "21962-12415" } } ], "category": "product_name", "name": "Microsoft.AspNetCore.Authentication.Negotiate" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate <9.0.21", "product_id": "6" } }, { "category": "product_version", "name": "9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate 9.0.21", "product_id": "21962-12416" } } ], "category": "product_name", "name": "Microsoft.AspNetCore.Authentication.Negotiate" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate <9.0.21", "product_id": "7" } }, { "category": "product_version", "name": "9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate 9.0.21", "product_id": "21962-12434" } } ], "category": "product_name", "name": "Microsoft.AspNetCore.Authentication.Negotiate" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate <9.0.21", "product_id": "8" } }, { "category": "product_version", "name": "9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate 9.0.21", "product_id": "21962-12432" } } ], "category": "product_name", "name": "Microsoft.AspNetCore.Authentication.Negotiate" }, { "branches": [ { "category": "product_version_range", "name": "<9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate <9.0.21", "product_id": "9" } }, { "category": "product_version", "name": "9.0.21", "product": { "name": "Microsoft.AspNetCore.Authentication.Negotiate 9.0.21", "product_id": "21962-12433" } } ], "category": "product_name", "name": "Microsoft.AspNetCore.Authentication.Negotiate" } ], "category": "vendor", "name": "Microsoft" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-70179", "cwe": { "id": "CWE-290", "name": "Authentication Bypass by Spoofing" }, "notes": [ { "category": "general", "text": "Microsoft", "title": "Assigning CNA" }, { "category": "faq", "text": "An attacker who successfully exploited this vulnerability could gain ELEVATED privileges, which may allow them to perform actions beyond their original permissions.", "title": "What privileges could be gained by an attacker who successfully exploited this vulnerability?" }, { "category": "faq", "text": "Successful exploitation of this vulnerability requires an attacker to have a deep understanding of the system and the ability to manipulate its components to trigger a specific condition. Successful exploitation is not guaranteed and depends on a combination of factors that may include the environment, system configuration, and the presence of additional security measures.", "title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?" } ], "product_status": { "fixed": [ "16767", "21956", "21962-12414", "21962-12415", "21962-12416", "21962-12432", "21962-12433", "21962-12434", "21962-20837", "21962-20838", "21962-20839" ], "known_affected": [ "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11" ] }, "references": [ { "category": "self", "summary": "CVE-2026-70179 ASP.NET Core Elevation of Privilege Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70179" }, { "category": "self", "summary": "CVE-2026-70179 ASP.NET Core Elevation of Privilege Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-70179.json" } ], "remediations": [ { "category": "vendor_fix", "date": "2026-10-13T07:00:00.000Z", "details": "18.10.4:Security Update:https://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes", "product_ids": [ "10" ], "url": "https://learn.microsoft.com/en-us/visualstudio/releases/2026/release-notes" }, { "category": "vendor_fix", "date": "2026-10-13T07:00:00.000Z", "details": "17.14.42:Security Update:https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes", "product_ids": [ "11" ], "url": "https://learn.microsoft.com/en-us/visualstudio/releases/2022/release-notes" }, { "category": "vendor_fix", "date": "2026-10-13T07:00:00.000Z", "details": "10.0.13:Security Update:https://github.com/dotnet/announcements/issues/458", "product_ids": [ "1", "2", "3" ], "url": "https://github.com/dotnet/announcements/issues/458" }, { "category": "vendor_fix", "date": "2026-10-13T07:00:00.000Z", "details": "8.0.32:Security Update:https://github.com/dotnet/announcements/issues/458", "product_ids": [ "4", "5", "6" ], "url": "https://github.com/dotnet/announcements/issues/458" }, { "category": "vendor_fix", "date": "2026-10-13T07:00:00.000Z", "details": "9.0.21:Security Update:https://github.com/dotnet/announcements/issues/458", "product_ids": [ "7", "8", "9" ], "url": "https://github.com/dotnet/announcements/issues/458" } ], "scores": [ { "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "exploitCodeMaturity": "UNPROVEN", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "remediationLevel": "OFFICIAL_FIX", "reportConfidence": "CONFIRMED", "scope": "UNCHANGED", "temporalScore": 6.5, "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C", "version": "3.1" }, "products": [ "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11" ] } ], "threats": [ { "category": "impact", "details": "Elevation of Privilege" }, { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely" } ], "title": "ASP.NET Core Elevation of Privilege Vulnerability" } ] }