{"answers":{"affected":"8 open source packages ship an affected version, including Microsoft.Native.Quic.MsQuic.OpenSSL and Microsoft.Native.Quic.MsQuic.Schannel. It affects 6 products.","exploited":"There is no known exploitation of CVE-2026-62815 in the wild and no public exploit code.","fix":"Upgrade Microsoft.Native.Quic.MsQuic.OpenSSL to a fixed version for your release line: 2.4.19 or 2.5.10.","what":"CVE-2026-62815 is a critical use after free vulnerability in Microsoft Windows 11 23h2, published on 11 Aug 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-2026-62815 and fix it if it is affected.\n\nWhat it is: CVE-2026-62815 is a critical use after free vulnerability in Microsoft Windows 11 23h2, published on 11 Aug 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-2026-62815 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet): affected all versions; fixed in 2.4.19\n- Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet): affected all versions; fixed in 2.4.19\n- Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet): affected from 2.5.3; fixed in 2.5.10\n- Microsoft.Native.Quic.MsQuic.OpenSSL (NuGet): affected from 2.5.3; fixed in 2.5.10\n- Microsoft.Native.Quic.MsQuic.Schannel (NuGet): affected all versions; fixed in 2.4.19\n- Microsoft.Native.Quic.MsQuic.Schannel (NuGet): affected all versions; fixed in 2.4.19\n- Microsoft.Native.Quic.MsQuic.Schannel (NuGet): affected from 2.5.3; fixed in 2.5.10\n- Microsoft.Native.Quic.MsQuic.Schannel (NuGet): affected from 2.5.3; fixed in 2.5.10\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-2026-62815/ (Markdown: https://insights.sbomify.com/CVE-2026-62815/index.md)","id":"CVE-2026-62815","markdown":"https://insights.sbomify.com/CVE-2026-62815/index.md","name":"CVE-2026-62815","record":{"aliases":["GHSA-92f5-vc22-8j33"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Windows QUIC implementation","requires_auth":"none","summary":"An unauthorized attacker can execute code over the network via a use-after-free flaw in the Microsoft QUIC implementation on Windows.","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"}],"description":"Use after free in Microsoft QUIC allows an unauthorized attacker to execute code over a network.","ecosystems":["NuGet"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Microsoft QUIC Remote Code Execution Vulnerability","id":"CVE-2026-62815","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","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":8,"n_references":1,"next":{"headline":"Windows Reliable Multicast Transport Driver (RMCAST) Remote Code Execution Vulnerability","id":"CVE-2026-62816"},"packages":[{"ecosystem":"NuGet","fixed":["2.4.19"],"introduced":["0"],"last_affected":[],"package":"Microsoft.Native.Quic.MsQuic.OpenSSL","purl":null,"source":"GHSA-92f5-vc22-8j33"},{"ecosystem":"NuGet","fixed":["2.4.19"],"introduced":["0"],"last_affected":[],"package":"Microsoft.Native.Quic.MsQuic.OpenSSL","purl":"pkg:nuget/Microsoft.Native.Quic.MsQuic.OpenSSL","source":"GHSA-92f5-vc22-8j33"},{"ecosystem":"NuGet","fixed":["2.5.10"],"introduced":["2.5.3"],"last_affected":[],"package":"Microsoft.Native.Quic.MsQuic.OpenSSL","purl":null,"source":"GHSA-92f5-vc22-8j33"},{"ecosystem":"NuGet","fixed":["2.5.10"],"introduced":["2.5.3"],"last_affected":[],"package":"Microsoft.Native.Quic.MsQuic.OpenSSL","purl":"pkg:nuget/Microsoft.Native.Quic.MsQuic.OpenSSL","source":"GHSA-92f5-vc22-8j33"},{"ecosystem":"NuGet","fixed":["2.4.19"],"introduced":["0"],"last_affected":[],"package":"Microsoft.Native.Quic.MsQuic.Schannel","purl":null,"source":"GHSA-92f5-vc22-8j33"},{"ecosystem":"NuGet","fixed":["2.4.19"],"introduced":["0"],"last_affected":[],"package":"Microsoft.Native.Quic.MsQuic.Schannel","purl":"pkg:nuget/Microsoft.Native.Quic.MsQuic.Schannel","source":"GHSA-92f5-vc22-8j33"},{"ecosystem":"NuGet","fixed":["2.5.10"],"introduced":["2.5.3"],"last_affected":[],"package":"Microsoft.Native.Quic.MsQuic.Schannel","purl":null,"source":"GHSA-92f5-vc22-8j33"},{"ecosystem":"NuGet","fixed":["2.5.10"],"introduced":["2.5.3"],"last_affected":[],"package":"Microsoft.Native.Quic.MsQuic.Schannel","purl":"pkg:nuget/Microsoft.Native.Quic.MsQuic.Schannel","source":"GHSA-92f5-vc22-8j33"}],"prev":{"headline":"Windows DHCP Server Information Disclosure Vulnerability","id":"CVE-2026-62814"},"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":"2026-08-11","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":"Windows Kernel Remote Code Execution Vulnerability","id":"CVE-2026-45657","kev_date_added":null,"published":"2026-06-09"},{"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":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":"2026-10-28","vendors":["Microsoft"]},"summary":"An unauthorized attacker can execute code over the network via a use-after-free flaw in the Microsoft QUIC implementation on Windows.","url":"https://insights.sbomify.com/CVE-2026-62815/"}