{"answers":{"affected":"It affects 6 products.","exploited":"There is no known exploitation of CVE-2026-45657 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-45657 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-45657 is a critical use after free vulnerability in Microsoft Windows 11 23h2, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-45657 and fix it if it is affected.\n\nWhat it is: CVE-2026-45657 is a critical use after free vulnerability in Microsoft Windows 11 23h2, published on 9 Jun 2026. 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-2026-45657 in the wild and no public exploit code.\n\nAffected product: Microsoft Windows 11 23h2. 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-2026-45657/ (Markdown: https://insights.sbomify.com/CVE-2026-45657/index.md)","id":"CVE-2026-45657","markdown":"https://insights.sbomify.com/CVE-2026-45657/index.md","name":"CVE-2026-45657","record":{"aliases":["GHSA-3r8r-9cjm-whj4"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Windows Kernel","requires_auth":"none","summary":"An unauthorized attacker can execute code over a network due to a use-after-free vulnerability in the Windows Kernel.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_11_23h2","vendor":"microsoft"},{"product":"windows_11_24h2","vendor":"microsoft"},{"product":"windows_11_25h2","vendor":"microsoft"},{"product":"windows_11_26h1","vendor":"microsoft"},{"product":"windows_server_2022","vendor":"microsoft"},{"product":"windows_server_2025","vendor":"microsoft"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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"},{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"Use after free in Windows Kernel allows an unauthorized attacker to execute code over a network.","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 Kernel Remote Code Execution Vulnerability","id":"CVE-2026-45657","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_11_23h2","products":["microsoft:windows_11_23h2","microsoft:windows_11_24h2","microsoft:windows_11_25h2","microsoft:windows_11_26h1","microsoft:windows_server_2022","microsoft:windows_server_2025"],"type":"use_after_free","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Windows BitLocker Security Feature Bypass Vulnerability","id":"CVE-2026-45658"},"packages":[],"prev":{"headline":"UEFI Secure Boot Security Feature Bypass Vulnerability","id":"CVE-2026-45656"},"products":["Windows 11 Version 23H2","Windows 11 Version 24H2","Windows 11 Version 25H2","Windows 11 version 23H2","Windows 11 version 26H1","Windows Server 2022","Windows Server 2025","Windows Server 2025 (Server Core installation)"],"published":"2026-06-09","related":[{"cvss_score":7.8,"headline":"Microsoft Windows Link Following","id":"CVE-2026-81963","kev_date_added":"2026-09-08","published":"2026-09-08"},{"cvss_score":9.8,"headline":"Microsoft QUIC Remote Code Execution Vulnerability","id":"CVE-2026-100219","kev_date_added":null,"published":"2026-10-13"},{"cvss_score":9.8,"headline":"Windows BitLocker Remote Code Execution Vulnerability","id":"CVE-2026-96909","kev_date_added":null,"published":"2026-10-13"},{"cvss_score":9.8,"headline":"Microsoft QUIC Remote Code Execution Vulnerability","id":"CVE-2026-62815","kev_date_added":null,"published":"2026-08-11"},{"cvss_score":9.8,"headline":"Windows DNS Client Remote Code Execution Vulnerability","id":"CVE-2026-41096","kev_date_added":null,"published":"2026-05-12"},{"cvss_score":9.3,"headline":"Windows Hyper-V Elevation of Privilege Vulnerability","id":"CVE-2026-40402","kev_date_added":null,"published":"2026-05-12"}],"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-24","vendors":["Microsoft"]},"summary":"An unauthorized attacker can execute code over a network due to a use-after-free vulnerability in the Windows Kernel.","url":"https://insights.sbomify.com/CVE-2026-45657/"}