{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2025-36854", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-36854", "idYear": 2025, "status": "PUBLISHED", "publishedAt": "2025-09-08T13:53:08.619Z", "updatedAt": "2025-09-08T14:01:20.382Z", "importedAt": "2026-10-24T01:57:34.152Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "EOL ASP.NET 6.0 Remote Code Execution Vulnerability", "summary": "A vulnerability ( CVE-2024-38229 https://www.cve.org/CVERecord ) exists in EOL ASP.NET when closing an HTTP/3 stream while application code is writing to the response body, a race condition may lead to use-after-free, resulting in Remote Code Execution.\n\n Per CWE-416: Use After Free https://cwe.mitre.org/data/definitions/416.html , Use After Free is when a product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.\n\n This issue affects EOL ASP.NET 6.0.0 <= 6.0.36 as represented in this CVE, as well as 8.0.0 <= 8.0.8, 9.0.0-preview.1.24081.5 <= 9.0.0.RC.1 as represented in  CVE-2024-38229 https://www.cve.org/CVERecord .\n\n Additionally, if you've deployed self-contained applications https://docs.microsoft.com/dotnet/core/deploying/#self-contained-deployments-scd  targeting any of the impacted versions, these applications are also vulnerable and must be recompiled and redeployed.\n\n NOTE: This CVE only represents End Of Life (EOL) software components. The vendor, Microsoft, has indicated there will be no future updates nor support provided upon inquiry.", "affected": [ { "vendor": "Microsoft", "product": ".NET 6.0", "platforms": [ "Unknown" ], "versions": [ { "version": "6.0.0", "status": "affected", "versionType": "custom", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.Identity", "packageName": "Microsoft.AspNetCore.Identity", "platforms": [ "Windows", "Linux", "MacOS" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.win-arm", "packageName": "Microsoft.AspNetCore.App.Runtime.win-arm", "platforms": [ "Windows" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.win-arm64", "packageName": "Microsoft.AspNetCore.App.Runtime.win-arm64", "platforms": [ "Windows" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.win-x64", "packageName": "Microsoft.AspNetCore.App.Runtime.win-x64", "platforms": [ "Windows" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.win-x86", "packageName": "Microsoft.AspNetCore.App.Runtime.win-x86", "platforms": [ "Windows" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.linux-arm", "packageName": "Microsoft.AspNetCore.App.Runtime.linux-arm", "platforms": [ "Linux" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.linux-arm64", "packageName": "Microsoft.AspNetCore.App.Runtime.linux-arm64", "platforms": [ "Linux" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.linux-musl-arm", "packageName": "Microsoft.AspNetCore.App.Runtime.linux-musl-arm", "platforms": [ "Linux" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.linux-musl-arm64", "packageName": "Microsoft.AspNetCore.App.Runtime.linux-musl-arm64", "platforms": [ "Linux" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.linux-musl-x64", "packageName": "Microsoft.AspNetCore.App.Runtime.linux-musl-x64", "platforms": [ "Linux" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.linux-x64", "packageName": "Microsoft.AspNetCore.App.Runtime.linux-x64", "platforms": [ "Linux" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.osx-arm64", "packageName": "Microsoft.AspNetCore.App.Runtime.osx-arm64", "platforms": [ "MacOS" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] }, { "vendor": "Microsoft", "product": "Microsoft.AspNetCore.App.Runtime.osx-x64", "packageName": "Microsoft.AspNetCore.App.Runtime.osx-x64", "platforms": [ "MacOS" ], "defaultStatus": "unaffected", "versions": [ { "version": ">=6.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "6.0.36" } ] } ] } } }