{"answers":{"affected":"38 open source packages ship an affected version, including Microsoft.Build, dotnet and dotnet-sdk. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-55247 in the wild and no public exploit code.","fix":"Upgrade Microsoft.Build to a fixed version for your release line: 17.10.46, 17.11.48, 17.12.50 or 17.14.28.","what":"CVE-2025-55247 is a high-severity path traversal vulnerability in Microsoft .Net, published on 14 Oct 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-55247 and fix it if it is affected.\n\nWhat it is: CVE-2025-55247 is a high-severity path traversal vulnerability in Microsoft .Net, published on 14 Oct 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2025-55247 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.Build (NuGet): affected from 17.10.0; fixed in 17.10.46\n- Microsoft.Build (NuGet): affected from 17.10.0; fixed in 17.10.46\n- Microsoft.Build (NuGet): affected from 17.11.0; fixed in 17.11.48\n- Microsoft.Build (NuGet): affected from 17.11.0; fixed in 17.11.48\n- Microsoft.Build (NuGet): affected from 17.12.0; fixed in 17.12.50\n- Microsoft.Build (NuGet): affected from 17.12.0; fixed in 17.12.50\n- Microsoft.Build (NuGet): affected from 17.14.0; fixed in 17.14.28\n- Microsoft.Build (NuGet): affected from 17.14.0; fixed in 17.14.28\n- Microsoft.Build (NuGet): affected from 17.15.0-preview-25277-114; fixed in 18.0.0-preview-25476-107\n- Microsoft.Build (NuGet): affected from 17.15.0-preview-25277-114; fixed in 18.0.0-preview-25476-107\n- Microsoft.Build (NuGet): affected from 17.8.0; fixed in 17.8.43\n- Microsoft.Build (NuGet): affected from 17.8.0; fixed in 17.8.43\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-55247/ (Markdown: https://insights.sbomify.com/CVE-2025-55247/index.md)","id":"CVE-2025-55247","markdown":"https://insights.sbomify.com/CVE-2025-55247/index.md","name":"CVE-2025-55247","record":{"aliases":["BELL-CVE-2025-55247","BIT-dotnet-2025-55247","BIT-dotnet-sdk-2025-55247","GHSA-w3q9-fxm7-j8fq","MINI-477f-p72h-w787","MINI-v524-wp24-xjm7","MINI-x47v-9gj3-63f3","ROOT-APP-NUGET-CVE-2025-55247","UBUNTU-CVE-2025-55247"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":".NET runtime library","requires_auth":"low_privilege","summary":"An authorized local attacker can elevate privileges by exploiting improper link resolution during file access in the .NET runtime.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":".net","vendor":"microsoft"}],"cvss":{"score":7.3,"severity":"high","source":"cna","vector":"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","version":"3.1"},"cwes":[{"id":"CWE-59","name":"Improper Link Resolution Before File Access"}],"description":"Improper link resolution before file access ('link following') in .NET allows an authorized attacker to elevate privileges locally.","ecosystems":["Bitnami","NuGet"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":".NET Elevation of Privilege Vulnerability","id":"CVE-2025-55247","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"microsoft:.net","products":["microsoft:.net"],"type":"path_traversal","year":"2025"},"n_packages":38,"n_references":1,"next":{"headline":".NET, .NET Framework, and Visual Studio Information Disclosure Vulnerability","id":"CVE-2025-55248"},"packages":[{"ecosystem":"Bitnami","fixed":["8.0.21","9.0.10"],"introduced":["8.0.0","9.0.0"],"last_affected":[],"package":"dotnet","purl":"pkg:bitnami/dotnet","source":"BIT-dotnet-2025-55247"},{"ecosystem":"Bitnami","fixed":["8.0.21","9.0.10"],"introduced":["8.0.0","9.0.0"],"last_affected":[],"package":"dotnet-sdk","purl":"pkg:bitnami/dotnet-sdk","source":"BIT-dotnet-sdk-2025-55247"},{"ecosystem":"NuGet","fixed":["17.10.46"],"introduced":["17.10.0"],"last_affected":[],"package":"Microsoft.Build","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.10.46"],"introduced":["17.10.0"],"last_affected":[],"package":"Microsoft.Build","purl":"pkg:nuget/Microsoft.Build","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.11.48"],"introduced":["17.11.0"],"last_affected":[],"package":"Microsoft.Build","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.11.48"],"introduced":["17.11.0"],"last_affected":[],"package":"Microsoft.Build","purl":"pkg:nuget/Microsoft.Build","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.12.50"],"introduced":["17.12.0"],"last_affected":[],"package":"Microsoft.Build","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.12.50"],"introduced":["17.12.0"],"last_affected":[],"package":"Microsoft.Build","purl":"pkg:nuget/Microsoft.Build","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.14.28"],"introduced":["17.14.0"],"last_affected":[],"package":"Microsoft.Build","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.14.28"],"introduced":["17.14.0"],"last_affected":[],"package":"Microsoft.Build","purl":"pkg:nuget/Microsoft.Build","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["18.0.0-preview-25476-107"],"introduced":["17.15.0-preview-25277-114"],"last_affected":[],"package":"Microsoft.Build","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["18.0.0-preview-25476-107"],"introduced":["17.15.0-preview-25277-114"],"last_affected":[],"package":"Microsoft.Build","purl":"pkg:nuget/Microsoft.Build","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.8.43"],"introduced":["17.8.0"],"last_affected":[],"package":"Microsoft.Build","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.8.43"],"introduced":["17.8.0"],"last_affected":[],"package":"Microsoft.Build","purl":"pkg:nuget/Microsoft.Build","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.10.46"],"introduced":["17.10.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.10.46"],"introduced":["17.10.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":"pkg:nuget/Microsoft.Build.Tasks.Core","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.11.48"],"introduced":["17.11.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.11.48"],"introduced":["17.11.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":"pkg:nuget/Microsoft.Build.Tasks.Core","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.12.50"],"introduced":["17.12.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.12.50"],"introduced":["17.12.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":"pkg:nuget/Microsoft.Build.Tasks.Core","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.14.28"],"introduced":["17.14.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.14.28"],"introduced":["17.14.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":"pkg:nuget/Microsoft.Build.Tasks.Core","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["18.0.0-preview-25476-107"],"introduced":["17.15.0-preview-25277-114"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["18.0.0-preview-25476-107"],"introduced":["17.15.0-preview-25277-114"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":"pkg:nuget/Microsoft.Build.Tasks.Core","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.8.43"],"introduced":["17.8.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.8.43"],"introduced":["17.8.0"],"last_affected":[],"package":"Microsoft.Build.Tasks.Core","purl":"pkg:nuget/Microsoft.Build.Tasks.Core","source":"GHSA-w3q9-fxm7-j8fq"},{"ecosystem":"NuGet","fixed":["17.10.46"],"introduced":["17.10.0"],"last_affected":[],"package":"Microsoft.Build.Utilities.Core","purl":null,"source":"GHSA-w3q9-fxm7-j8fq"},{"ecosy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Gaming Services Elevation of Privilege Vulnerability","id":"CVE-2025-55245"},"products":[".NET 8.0",".NET 9.0"],"published":"2025-10-14","related":[{"cvss_score":9.8,"headline":".NET and Visual Studio Remote Code Execution Vulnerability","id":"CVE-2024-43498","kev_date_added":null,"published":"2024-11-12"},{"cvss_score":9.1,"headline":"NET, .NET Framework, and Visual Studio Security Feature Bypass Vulnerability","id":"CVE-2024-0057","kev_date_added":null,"published":"2024-01-09"},{"cvss_score":8.8,"headline":".NET Security Feature Bypass Vulnerability","id":"CVE-2026-96957","kev_date_added":null,"published":"2026-10-13"},{"cvss_score":8.8,"headline":".NET and Visual Studio Elevation of Privilege Vulnerability","id":"CVE-2026-69439","kev_date_added":null,"published":"2026-09-08"},{"cvss_score":8.8,"headline":".NET and Visual Studio Remote Code Execution Vulnerability","id":"CVE-2026-71328","kev_date_added":null,"published":"2026-09-08"},{"cvss_score":8.8,"headline":"ASP.NET Core Elevation of Privilege Vulnerability","id":"CVE-2026-47300","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":8.8,"headline":"ASP.NET Core Elevation of Privilege Vulnerability","id":"CVE-2026-47303","kev_date_added":null,"published":"2026-07-14"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-02-22","vendors":["Microsoft"]},"summary":"An authorized local attacker can elevate privileges by exploiting improper link resolution during file access in the .NET runtime.","url":"https://insights.sbomify.com/CVE-2025-55247/"}