{"answers":{"affected":"It affects 10 products.","exploited":"Yes. Attackers have exploited CVE-2025-62221 in the wild since at least 9 Dec 2025.","fix":"No fix has been published for CVE-2025-62221 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 30 Dec 2025.","what":"CVE-2025-62221 is a high-severity use after free vulnerability in Microsoft Windows 10 1809, published on 9 Dec 2025. 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-2025-62221 and fix it if it is affected.\n\nWhat it is: CVE-2025-62221 is a high-severity use after free vulnerability in Microsoft Windows 10 1809, published on 9 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2025-62221 in the wild since at least 9 Dec 2025.\n\nAffected product: Microsoft Windows 10 1809. 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-2025-62221/ (Markdown: https://insights.sbomify.com/CVE-2025-62221/index.md)","id":"CVE-2025-62221","markdown":"https://insights.sbomify.com/CVE-2025-62221/index.md","name":"CVE-2025-62221","record":{"aliases":["GHSA-4xhr-vh2p-rpch"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Windows Cloud Files Driver","requires_auth":"low_privilege","summary":"An authorized local attacker can exploit a use-after-free flaw in the Windows Cloud Files Mini Filter Driver to elevate privileges.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_10_1809","vendor":"microsoft"},{"product":"windows_10_21h2","vendor":"microsoft"},{"product":"windows_10_22h2","vendor":"microsoft"},{"product":"windows_11_23h2","vendor":"microsoft"},{"product":"windows_11_24h2","vendor":"microsoft"},{"product":"windows_11_25h2","vendor":"microsoft"},{"product":"windows_server_2019","vendor":"microsoft"},{"product":"windows_server_2022","vendor":"microsoft"},{"product":"windows_server_2022_23h2","vendor":"microsoft"},{"product":"windows_server_2025","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:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"Use after free in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-01-18","github_poc":1,"max_poc_stars":2,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-01-18T18:55:28Z","kind":"github_poc","ref":"https://github.com/Teodor1231241/DEMO-Proof-of-Concept-Temporal-Memory-Inconsistency-in-cldflt.sys-CVE-2025-62221","stars":2,"title":null}],"tier":"exploited"},"has_fix":null,"headline":"Microsoft Windows Use After Free","id":"CVE-2025-62221","indexable":true,"kev":{"dateAdded":"2025-12-09","dueDate":"2025-12-30","knownRansomwareCampaignUse":"Unknown","product":"Windows","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","vendorProject":"Microsoft","vulnerabilityName":"Microsoft Windows Use After Free Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_10_1809","products":["microsoft:windows_10_1809","microsoft:windows_10_21h2","microsoft:windows_10_22h2","microsoft:windows_11_23h2","microsoft:windows_11_24h2","microsoft:windows_11_25h2","microsoft:windows_server_2019","microsoft:windows_server_2022","microsoft:windows_server_2022_23h2","microsoft:windows_server_2025"],"type":"use_after_free","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Agentic AI and Visual Studio Code Remote Code Execution Vulnerability","id":"CVE-2025-62222"},"packages":[],"prev":{"headline":"Windows Subsystem for Linux GUI Remote Code Execution Vulnerability","id":"CVE-2025-62220"},"products":["Windows 10 Version 1809","Windows 10 Version 21H2","Windows 10 Version 22H2","Windows 11 Version 23H2","Windows 11 Version 24H2","Windows 11 Version 25H2","Windows 11 version 22H3","Windows Server 2019","Windows Server 2019 (Server Core installation)","Windows Server 2022","Windows Server 2022, 23H2 Edition (Server Core installation)","Windows Server 2025","Windows Server 2025 (Server Core installation)"],"published":"2025-12-09","related":[{"cvss_score":8.8,"headline":"Microsoft SmartScreen Prompt Security Feature Bypass","id":"CVE-2024-29988","kev_date_added":"2024-04-30","published":"2024-04-09"},{"cvss_score":8.1,"headline":"Microsoft Windows Internet Shortcut Files Security Feature Bypass","id":"CVE-2024-21412","kev_date_added":"2024-02-13","published":"2024-02-13"},{"cvss_score":7.8,"headline":"Microsoft Windows DWM Core Library Use-After-Free","id":"CVE-2025-30400","kev_date_added":"2025-05-13","published":"2025-05-13"},{"cvss_score":7.8,"headline":"Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control","id":"CVE-2024-21338","kev_date_added":"2024-03-04","published":"2024-02-13"},{"cvss_score":7.8,"headline":"Microsoft Windows Desktop Window Manager (DWM) Core Library Privilege Escalation","id":"CVE-2023-36033","kev_date_added":"2023-11-14","published":"2023-11-14"},{"cvss_score":7.8,"headline":"Microsoft Streaming Service Proxy Privilege Escalation","id":"CVE-2023-36802","kev_date_added":"2023-09-12","published":"2023-09-12"}],"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":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-04-16","vendors":["Microsoft"]},"summary":"An authorized local attacker can exploit a use-after-free flaw in the Windows Cloud Files Mini Filter Driver to elevate privileges.","url":"https://insights.sbomify.com/CVE-2025-62221/"}