{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2023-21687 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-21687 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-21687 is a medium-severity vulnerability in Microsoft Windows 11 21h2, published on 14 Feb 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-2023-21687 and fix it if it is affected.\n\nWhat it is: CVE-2023-21687 is a medium-severity vulnerability in Microsoft Windows 11 21h2, published on 14 Feb 2023. 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-2023-21687 in the wild and no public exploit code.\n\nAffected product: Microsoft Windows 11 21h2. 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-2023-21687/ (Markdown: https://insights.sbomify.com/CVE-2023-21687/index.md)","id":"CVE-2023-21687","markdown":"https://insights.sbomify.com/CVE-2023-21687/index.md","name":"CVE-2023-21687","record":{"aliases":["GHSA-mr4r-vfmp-v9q3"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Windows HTTP.sys","requires_auth":"low_privilege","summary":"An attacker can exploit an out-of-bounds read in HTTP.sys to disclose sensitive information from memory on affected Windows systems.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_11_21h2","vendor":"microsoft"},{"product":"windows_11_22h2","vendor":"microsoft"},{"product":"windows_server_2022","vendor":"microsoft"}],"cvss":{"score":5.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-668","name":"Exposure of Resource to Wrong Sphere"},{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"HTTP.sys Information Disclosure 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":"HTTP.sys Information Disclosure Vulnerability","id":"CVE-2023-21687","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_11_21h2","products":["microsoft:windows_11_21h2","microsoft:windows_11_22h2","microsoft:windows_server_2022"],"type":"information_disclosure","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"NT OS Kernel Elevation of Privilege Vulnerability","id":"CVE-2023-21688"},"packages":[],"prev":{"headline":"Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability","id":"CVE-2023-21686"},"products":["Windows 11 version 21H2","Windows 11 version 22H2","Windows Server 2022"],"published":"2023-02-14","related":[{"cvss_score":7.8,"headline":"Microsoft Windows Hyper-V Privilege Escalation","id":"CVE-2024-38080","kev_date_added":"2024-07-09","published":"2024-07-09"},{"cvss_score":9.8,"headline":"HTTP Protocol Stack Remote Code Execution Vulnerability","id":"CVE-2023-23392","kev_date_added":null,"published":"2023-03-14"},{"cvss_score":8.8,"headline":"Remote Desktop Client Remote Code Execution Vulnerability","id":"CVE-2024-43533","kev_date_added":null,"published":"2024-10-08"},{"cvss_score":8.8,"headline":"Microsoft Management Console Remote Code Execution Vulnerability","id":"CVE-2024-38259","kev_date_added":null,"published":"2024-09-10"},{"cvss_score":8.8,"headline":"Windows Themes Remote Code Execution Vulnerability","id":"CVE-2023-38146","kev_date_added":null,"published":"2023-09-12"},{"cvss_score":8,"headline":"Secure Boot Security Feature Bypass Vulnerability","id":"CVE-2024-37977","kev_date_added":null,"published":"2024-07-09"},{"cvss_score":8,"headline":"Windows Bluetooth Driver Remote Code Execution Vulnerability","id":"CVE-2023-35634","kev_date_added":null,"published":"2023-12-12"}],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-19","vendors":["Microsoft"]},"summary":"An attacker can exploit an out-of-bounds read in HTTP.sys to disclose sensitive information from memory on affected Windows systems.","url":"https://insights.sbomify.com/CVE-2023-21687/"}