{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-69304", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-08-03T20:46:07.440Z", "datePublished": "2026-09-08T17:17:47.686Z", "dateUpdated": "2026-10-08T18:18:57.719Z" }, "containers": { "cna": { "title": "ASP.NET Core Denial of Service Vulnerability", "datePublic": "2026-09-08T14:00:00.000Z", "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*", "versionStartIncluding": "11.0", "versionEndExcluding": "11.0 RC1" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.0", "versionEndExcluding": "10.0.12" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0.0", "versionEndExcluding": "9.0.20" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.0.31" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*", "versionStartIncluding": "18.9.0", "versionEndExcluding": "18.9.3" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "versionStartIncluding": "17.14.0", "versionEndExcluding": "17.14.40" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0", "versionEndExcluding": "9.0.20" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0", "versionEndExcluding": "10.0.12" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0", "versionEndExcluding": "8.0.31" } ] } ] } ], "affected": [ { "vendor": "Microsoft", "product": ".NET 10.0", "versions": [ { "version": "10.0.0", "lessThan": "10.0.12", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": ".NET 8.0", "versions": [ { "version": "8.0.0", "lessThan": "8.0.31", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": ".NET 9.0", "versions": [ { "version": "9.0.0", "lessThan": "9.0.20", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "ASP.NET Core 10.0", "versions": [ { "version": "10.0", "lessThan": "10.0.12", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "ASP.NET Core 11.0", "versions": [ { "version": "11.0", "lessThan": "11.0 RC1", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "ASP.NET Core 8.0", "versions": [ { "version": "8.0", "lessThan": "8.0.31", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "ASP.NET Core 9.0", "versions": [ { "version": "9.0", "lessThan": "9.0.20", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.14", "versions": [ { "version": "17.14.0", "lessThan": "17.14.40", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.9", "versions": [ { "version": "18.9.0", "lessThan": "18.9.3", "versionType": "custom", "status": "affected" } ] } ], "descriptions": [ { "value": "Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.", "lang": "en-US" } ], "problemTypes": [ { "descriptions": [ { "description": "CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)", "lang": "en-US", "type": "CWE", "cweId": "CWE-409" } ] } ], "providerMetadata": { "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-10-08T18:18:57.719Z" }, "references": [ { "name": "ASP.NET Core Denial of Service Vulnerability", "tags": [ "vendor-advisory", "patch" ], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69304" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en-US", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "baseSeverity": "MEDIUM", "baseScore": 5.9, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C" } } ] }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-09-08T19:33:58.502592Z", "id": "CVE-2026-69304", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-08T19:34:17.319Z" } } ] } }