{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-108398", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-10-09T21:52:56.474Z", "datePublished": "2026-10-13T18:59:30.926Z", "dateUpdated": "2026-10-14T17:48:05.593Z" }, "containers": { "cna": { "title": ".NET Framework Security Feature Bypass Vulnerability", "datePublic": "2026-10-13T14:00:00.000Z", "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.0.0.0", "versionEndExcluding": "2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7.0", "versionEndExcluding": "2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8.0", "versionEndExcluding": "2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.7.0", "versionEndExcluding": "4.7.4150.0" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8.0", "versionEndExcluding": "4.8.4811.0" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8.1", "versionEndExcluding": "2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0" }, { "vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net_framework:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.8.0.0", "versionEndExcluding": "4.8.9363.0" } ] } ] } ], "affected": [ { "vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2", "platforms": [ "Windows 10 version 1607", "Windows Server 2016", "Windows Server 2019" ], "versions": [ { "version": "3.0.0.0", "lessThan": "2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.7.2", "platforms": [ "Windows 10 version 1809" ], "versions": [ { "version": "4.7.0", "lessThan": "2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.8", "platforms": [ "Windows 10 version 1809", "Windows 10 version 21H2", "Windows 10 version 22H2", "Windows Server 2019", "Windows Server 2022" ], "versions": [ { "version": "4.8.0", "lessThan": "2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Microsoft .NET Framework 3.5 AND 4.8.1", "platforms": [ "Windows 10 version 21H2", "Windows 10 version 22H2", "Windows 11 version 23H2", "Windows 11 version 24H2", "Windows 11 version 25H2", "Windows 11 version 26H2", "Windows Server 2022", "Windows Server 2025" ], "versions": [ { "version": "4.8.1", "lessThan": "2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2", "platforms": [ "Windows Server 2012", "Windows Server 2012 R2" ], "versions": [ { "version": "4.7.0", "lessThan": "4.7.4150.0", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Microsoft .NET Framework 4.8", "platforms": [ "Windows 10 version 1607", "Windows Server 2012", "Windows Server 2012 R2", "Windows Server 2016" ], "versions": [ { "version": "4.8.0", "lessThan": "4.8.4811.0", "versionType": "custom", "status": "affected" } ] }, { "vendor": "Microsoft", "product": "Microsoft .NET Framework 4.8.1", "platforms": [ "Windows 11 version 26H1" ], "versions": [ { "version": "4.8.0.0", "lessThan": "4.8.9363.0", "versionType": "custom", "status": "affected" } ] } ], "descriptions": [ { "value": "Untrusted search path in .NET Framework allows an authorized attacker to bypass a security feature locally.", "lang": "en-US" } ], "problemTypes": [ { "descriptions": [ { "description": "CWE-426: Untrusted Search Path", "lang": "en-US", "type": "CWE", "cweId": "CWE-426" } ] } ], "providerMetadata": { "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-10-14T17:48:05.593Z" }, "references": [ { "name": ".NET Framework Security Feature Bypass Vulnerability", "tags": [ "vendor-advisory", "patch" ], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-108398" } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en-US", "value": "GENERAL" } ], "cvssV3_1": { "version": "3.1", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C" } } ] }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "id": "CVE-2026-108398", "role": "CISA Coordinator", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "version": "2.0.3", "timestamp": "2026-10-13T22:17:39.221098Z" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-13T22:26:45.296Z" } } ] } }