{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2020-1243 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-1243 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-1243 is a high-severity denial of service vulnerability in Microsoft Windows 10, published on 16 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-1243 and fix it if it is affected.\n\nWhat it is: CVE-2020-1243 is a high-severity denial of service vulnerability in Microsoft Windows 10, published on 16 Oct 2020. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-1243 in the wild and no public exploit code.\n\nAffected product: Microsoft Windows 10. 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-2020-1243/ (Markdown: https://insights.sbomify.com/CVE-2020-1243/index.md)","id":"CVE-2020-1243","markdown":"https://insights.sbomify.com/CVE-2020-1243/index.md","name":"CVE-2020-1243","record":{"aliases":["GHSA-xmww-w83v-qcv7"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Windows Hyper-V","requires_auth":"low_privilege","summary":"A privileged guest user can cause a denial of service on the Hyper-V host by running a specially crafted application.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_10","vendor":"microsoft"},{"product":"windows_server_2016","vendor":"microsoft"},{"product":"windows_server_2019","vendor":"microsoft"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","version":"3.1"},"cwes":[],"description":"\u003cp\u003eA denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.\u003c/p\u003e","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 Hyper-V Denial of Service Vulnerability","id":"CVE-2020-1243","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_10","products":["microsoft:windows_10","microsoft:windows_server_2016","microsoft:windows_server_2019"],"type":"denial_of_service","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in Windows","id":"CVE-2020-1244"},"packages":[],"prev":{"headline":"Information disclosure in Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems","id":"CVE-2020-1242"},"products":["Windows 10 Version 1607","Windows 10 Version 1709","Windows 10 Version 1803","Windows 10 Version 1809","Windows 10 Version 1903 for x64-based Systems","Windows 10 Version 1909","Windows 10 Version 2004","Windows Server 2016","Windows Server 2016 (Server Core installation)","Windows Server 2019","Windows Server 2019 (Server Core installation)","Windows Server version 2004","Windows Server, version 1903 (Server Core installation)","Windows Server, version 1909 (Server Core installation)"],"published":"2020-10-16","related":[{"cvss_score":8.8,"headline":"Microsoft Windows Adobe Type Manager Library Remote Code Execution","id":"CVE-2015-2426","kev_date_added":"2022-03-28","published":"2015-07-20"},{"cvss_score":6.6,"headline":"Microsoft Windows Mount Manager Privilege Escalation","id":"CVE-2015-1769","kev_date_added":"2022-05-25","published":"2015-08-15"},{"cvss_score":10,"headline":"Windows Hard Link Elevation of Privilege Vulnerability","id":"CVE-2020-1467","kev_date_added":null,"published":"2020-08-17"},{"cvss_score":9.9,"headline":"Windows TCP/IP Remote Code Execution Vulnerability","id":"CVE-2021-26424","kev_date_added":null,"published":"2021-08-12"},{"cvss_score":9.9,"headline":"Windows Hyper-V Remote Code Execution Vulnerability","id":"CVE-2021-28476","kev_date_added":null,"published":"2021-05-11"},{"cvss_score":9.9,"headline":"Windows Hyper-V Remote Code Execution Vulnerability","id":"CVE-2021-26867","kev_date_added":null,"published":"2021-03-11"},{"cvss_score":9.9,"headline":"Security feature bypass in Windows","id":"CVE-2019-1384","kev_date_added":null,"published":"2019-11-12"}],"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":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["Microsoft"]},"summary":"A privileged guest user can cause a denial of service on the Hyper-V host by running a specially crafted application.","url":"https://insights.sbomify.com/CVE-2020-1243/"}