{"answers":{"affected":"It affects 13 products.","exploited":"Yes. Attackers have exploited CVE-2023-21674 in the wild since at least 10 Jan 2023.","fix":"No fix has been published for CVE-2023-21674 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 31 Jan 2023.","what":"CVE-2023-21674 is a high-severity use after free vulnerability in Microsoft Windows 10 1507, published on 10 Jan 2023. 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-2023-21674 and fix it if it is affected.\n\nWhat it is: CVE-2023-21674 is a high-severity use after free vulnerability in Microsoft Windows 10 1507, published on 10 Jan 2023. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2023-21674 in the wild since at least 10 Jan 2023.\n\nAffected product: Microsoft Windows 10 1507. 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-2023-21674/ (Markdown: https://insights.sbomify.com/CVE-2023-21674/index.md)","id":"CVE-2023-21674","markdown":"https://insights.sbomify.com/CVE-2023-21674/index.md","name":"CVE-2023-21674","record":{"aliases":["GHSA-hqxf-h392-6m7w"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Windows OS","requires_auth":"low_privilege","summary":"An attacker can exploit a use-after-free flaw in Windows ALPC to elevate privileges on affected systems.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_10_1507","vendor":"microsoft"},{"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_rt_8.1","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":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-416","name":"Use After Free"}],"description":"Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2024-03-07","github_poc":1,"max_poc_stars":42,"metasploit":0,"nuclei":0,"refs":[{"date":"2024-03-07T05:43:48Z","kind":"github_poc","ref":"https://github.com/hd3s5aa/CVE-2023-21674","stars":42,"title":null}],"tier":"exploited"},"has_fix":null,"headline":"Microsoft Windows Advanced Local Procedure Call (ALPC) Privilege Escalation","id":"CVE-2023-21674","indexable":true,"kev":{"dateAdded":"2023-01-10","dueDate":"2023-01-31","knownRansomwareCampaignUse":"Unknown","product":"Windows","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Microsoft","vulnerabilityName":"Microsoft Windows Advanced Local Procedure Call (ALPC) Privilege Escalation Vulnerability"},"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_10_1507","products":["microsoft:windows_10_1507","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_rt_8.1","microsoft:windows_server_2012","microsoft:windows_server_2016","microsoft:windows_server_2019","microsoft:windows_server_2022"],"type":"use_after_free","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Windows Kernel Elevation of Privilege Vulnerability","id":"CVE-2023-21675"},"packages":[],"prev":{"headline":"Improper Access Control in Kernel","id":"CVE-2023-21673"},"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 8.1","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 Windows Search Remote Code Execution","id":"CVE-2017-8543","kev_date_added":"2022-05-24","published":"2017-06-15"},{"cvss_score":8.8,"headline":"Microsoft Windows External Control of File Name or Path","id":"CVE-2025-33053","kev_date_added":"2025-06-10","published":"2025-06-10"},{"cvss_score":8.8,"headline":"Microsoft Windows SMB Client Improper Access Control","id":"CVE-2025-33073","kev_date_added":"2025-10-20","published":"2025-06-10"},{"cvss_score":8.8,"headline":"Microsoft Windows Task Scheduler Privilege Escalation","id":"CVE-2024-49039","kev_date_added":"2024-11-12","published":"2024-11-12"},{"cvss_score":8.8,"headline":"Microsoft Windows MSHTML Platform Spoofing","id":"CVE-2024-43461","kev_date_added":"2024-09-16","published":"2024-09-10"},{"cvss_score":8.8,"headline":"Microsoft Windows MSHTML Platform Security Feature Bypass","id":"CVE-2024-30040","kev_date_added":"2024-05-14","published":"2024-05-14"},{"cvss_score":8.8,"headline":"Microsoft Windows SmartScreen Security Feature Bypass","id":"CVE-2023-36025","kev_date_added":"2023-11-14","published":"2023-11-14"}],"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":"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":"2025-10-21","vendors":["Microsoft"]},"summary":"An attacker can exploit a use-after-free flaw in Windows ALPC to elevate privileges on affected systems.","url":"https://insights.sbomify.com/CVE-2023-21674/"}