{"answers":{"affected":"It affects 15 products.","exploited":"There is no known exploitation of CVE-2023-21546 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-21546 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-21546 is a high-severity vulnerability in Microsoft Windows 10 1607, published on 10 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-21546 and fix it if it is affected.\n\nWhat it is: CVE-2023-21546 is a high-severity vulnerability in Microsoft Windows 10 1607, published on 10 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-21546 in the wild and no public exploit code.\n\nAffected product: Microsoft Windows 10 1607. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2023-21546/ (Markdown: https://insights.sbomify.com/CVE-2023-21546/index.md)","id":"CVE-2023-21546","markdown":"https://insights.sbomify.com/CVE-2023-21546/index.md","name":"CVE-2023-21546","record":{"aliases":["GHSA-99h2-jh76-mc3f"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Windows L2TP","requires_auth":"none","summary":"Attackers can achieve remote code execution on Windows systems via a race condition in the Layer 2 Tunneling Protocol implementation.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_10_1607","vendor":"microsoft"},{"product":"windows_10_1809","vendor":"microsoft"},{"product":"windows_10_20h2","vendor":"microsoft"},{"product":"windows_10_21h2","vendor":"microsoft"},{"product":"windows_10_22h2","vendor":"microsoft"},{"product":"windows_11_21h2","vendor":"microsoft"},{"product":"windows_11_22h2","vendor":"microsoft"},{"product":"windows_7","vendor":"microsoft"},{"product":"windows_8.1","vendor":"microsoft"},{"product":"windows_rt_8.1","vendor":"microsoft"},{"product":"windows_server_2008","vendor":"microsoft"},{"product":"windows_server_2012","vendor":"microsoft"},{"product":"windows_server_2016","vendor":"microsoft"},{"product":"windows_server_2019","vendor":"microsoft"},{"product":"windows_server_2022","vendor":"microsoft"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"},{"id":"CWE-591","name":"Sensitive Data Storage in Improperly Locked Memory"}],"description":"Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability","id":"CVE-2023-21546","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_10_1607","products":["microsoft:windows_10_1607","microsoft:windows_10_1809","microsoft:windows_10_20h2","microsoft:windows_10_21h2","microsoft:windows_10_22h2","microsoft:windows_11_21h2","microsoft:windows_11_22h2","microsoft:windows_7","microsoft:windows_8.1","microsoft:windows_rt_8.1","microsoft:windows_server_2008","microsoft:windows_server_2012","microsoft:windows_server_2016","microsoft:windows_server_2019","microsoft:windows_server_2022"],"type":"race_condition","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability","id":"CVE-2023-21547"},"packages":[],"prev":{"headline":"Windows Layer 2 Tunneling Protocol (L2TP) Remote Code Execution Vulnerability","id":"CVE-2023-21543"},"products":["Windows 10 Version 1507","Windows 10 Version 1607","Windows 10 Version 1809","Windows 10 Version 20H2","Windows 10 Version 21H2","Windows 10 Version 22H2","Windows 11 version 21H2","Windows 11 version 22H2","Windows 7","Windows 7 Service Pack 1","Windows 8.1","Windows Server 2008  Service Pack 2","Windows Server 2008 R2 Service Pack 1","Windows Server 2008 R2 Service Pack 1 (Server Core installation)","Windows Server 2008 Service Pack 2","Windows Server 2008 Service Pack 2 (Server Core installation)","Windows Server 2012","Windows Server 2012 (Server Core installation)","Windows Server 2012 R2","Windows Server 2012 R2 (Server Core installation)","Windows Server 2016","Windows Server 2016 (Server Core installation)","Windows Server 2019","Windows Server 2019 (Server Core installation)","Windows Server 2022"],"published":"2023-01-10","related":[{"cvss_score":9.8,"headline":"Microsoft Internet Key Exchange (IKE) Service Extensions Double Free","id":"CVE-2026-33824","kev_date_added":"2026-08-18","published":"2026-04-14"},{"cvss_score":8.8,"headline":"Microsoft Windows Shell Protection Mechanism Failure","id":"CVE-2026-21510","kev_date_added":"2026-02-10","published":"2026-02-10"},{"cvss_score":8.8,"headline":"Microsoft MSHTML Framework Protection Mechanism Failure","id":"CVE-2026-21513","kev_date_added":"2026-02-10","published":"2026-02-10"},{"cvss_score":8.8,"headline":"Microsoft Windows Defender SmartScreen Security Feature Bypass","id":"CVE-2023-32049","kev_date_added":"2023-07-11","published":"2023-07-11"},{"cvss_score":8.4,"headline":"Microsoft Streaming Service Untrusted Pointer Dereference","id":"CVE-2023-29360","kev_date_added":"2024-02-29","published":"2023-06-13"},{"cvss_score":7.8,"headline":"Microsoft Windows Heap-Based Buffer Overflow","id":"CVE-2026-85880","kev_date_added":"2026-09-08","published":"2026-09-08"},{"cvss_score":7.8,"headline":"Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability","id":"CVE-2026-56155","kev_date_added":"2026-07-14","published":"2026-07-14"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2025-01-01","vendors":["Microsoft"]},"summary":"Attackers can achieve remote code execution on Windows systems via a race condition in the Layer 2 Tunneling Protocol implementation.","url":"https://insights.sbomify.com/CVE-2023-21546/"}