{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-55247", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2025-08-11T20:26:16.634Z", "datePublished": "2025-10-14T17:00:09.501Z", "dateUpdated": "2026-02-22T17:24:10.799Z"}, "containers": {"cna": {"title": ".NET Elevation of Privilege Vulnerability", "datePublic": "2025-10-14T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.0.21"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0.0", "versionEndExcluding": "9.0.10"}]}]}], "affected": [{"vendor": "Microsoft", "product": ".NET 8.0", "versions": [{"version": "8.0.0", "lessThan": "8.0.21", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": ".NET 9.0", "versions": [{"version": "9.0.0", "lessThan": "9.0.10", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')", "lang": "en-US", "type": "CWE", "cweId": "CWE-59"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-02-22T17:24:10.799Z"}, "references": [{"name": ".NET Elevation of Privilege Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55247"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "baseSeverity": "HIGH", "baseScore": 7.3, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-10-15T13:49:15.190184Z", "id": "CVE-2025-55247", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-15T13:49:44.240Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-55247", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2025-10-15T13:49:15.190184Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-15T13:49:39.352Z"}}], "cna": {"title": ".NET Elevation of Privilege Vulnerability", "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 7.3, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C"}, "scenarios": [{"lang": "en-US", "value": "GENERAL"}]}], "affected": [{"vendor": "Microsoft", "product": ".NET 8.0", "versions": [{"status": "affected", "version": "8.0.0", "lessThan": "8.0.21", "versionType": "custom"}]}, {"vendor": "Microsoft", "product": ".NET 9.0", "versions": [{"status": "affected", "version": "9.0.0", "lessThan": "9.0.10", "versionType": "custom"}]}], "datePublic": "2025-10-14T14:00:00.000Z", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55247", "name": ".NET Elevation of Privilege Vulnerability", "tags": ["vendor-advisory", "patch"]}], "descriptions": [{"lang": "en-US", "value": "Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally."}], "problemTypes": [{"descriptions": [{"lang": "en-US", "type": "CWE", "cweId": "CWE-59", "description": "CWE-59: Improper Link Resolution Before File Access ('Link Following')"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "8.0.21", "versionStartIncluding": "8.0.0"}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "9.0.10", "versionStartIncluding": "9.0.0"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-02-22T17:24:10.799Z"}}}, "cveMetadata": {"cveId": "CVE-2025-55247", "state": "PUBLISHED", "dateUpdated": "2026-02-22T17:24:10.799Z", "dateReserved": "2025-08-11T20:26:16.634Z", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "datePublished": "2025-10-14T17:00:09.501Z", "assignerShortName": "microsoft"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "matchCriteriaId": "252864D6-F259-4CF9-B811-EFFE60E1C29A", "versionEndExcluding": "8.0.21", "versionStartIncluding": "8.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "matchCriteriaId": "1772BCDE-28E4-45DB-90B3-51BEE1FEBC92", "versionEndExcluding": "9.0.10", "versionStartIncluding": "9.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally."}], "id": "CVE-2025-55247", "lastModified": "2025-10-23T15:08:42.730", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 5.9, "source": "secure@microsoft.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-10-14T17:15:44.623", "references": [{"source": "secure@microsoft.com", "tags": ["Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55247"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "secure@microsoft.com", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2025:18152", "cpe": "cpe:/o:redhat:enterprise_linux:10.0", "package": "dotnet8.0-0:8.0.121-1.el10_0", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2025-10-15T00:00:00Z"}, {"advisory": "RHSA-2025:18153", "cpe": "cpe:/o:redhat:enterprise_linux:10.0", "package": "dotnet9.0-0:9.0.111-1.el10_0", "product_name": "Red Hat Enterprise Linux 10", "release_date": "2025-10-15T00:00:00Z"}, {"advisory": "RHSA-2025:18148", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "dotnet8.0-0:8.0.121-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-10-15T00:00:00Z"}, {"advisory": "RHSA-2025:18150", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "dotnet9.0-0:9.0.111-1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2025-10-15T00:00:00Z"}, {"advisory": "RHSA-2025:18149", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "dotnet8.0-0:8.0.121-1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-10-15T00:00:00Z"}, {"advisory": "RHSA-2025:18151", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "dotnet9.0-0:9.0.111-1.el9_6", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2025-10-15T00:00:00Z"}], "bugzilla": {"description": "dotnet: .NET Denial of Service Vulnerability", "id": "2403086", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2403086"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-377", "details": ["Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.", "A flaw was found in MSBuild\u2019s temporary directory handling on Linux where predictable, non-randomized temporary paths are used. Local users can create or manipulate those paths before MSBuild runs, causing build failures or unexpected behavior and resulting in denial of service for build operations."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2025-55247", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "dotnet10.0", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "rhel8/dotnet-80", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "rhel8/dotnet-90", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "ubi8/dotnet-80", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "ubi8/dotnet-90", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "dotnet10.0", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "dotnet6.0", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "dotnet7.0", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift_devspaces:3:", "fix_state": "Affected", "package_name": "devspaces/udi-rhel9", "product_name": "Red Hat OpenShift Dev Spaces"}], "public_date": "2025-10-15T13:06:53Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-55247\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-55247"], "statement": "The Red Hat Product Security team has assessed this issue as Moderate. Predictable MSBuild temporary directory paths on Linux allow a local user to precreate or manipulate build temp directories, causing build failures (denial of service) on shared build hosts or CI runners using the affected .NET packages.", "threat_severity": "Moderate"}

{"created": "2025-10-23T15:17:10.215546+00:00", "updated": "2025-10-23T15:17:10.215583+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$.net"]}