{"answers":{"affected":"It affects 4 products.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40369 exists.","fix":"No fix has been published for CVE-2026-40369 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-40369 is a high-severity memory corruption vulnerability in Microsoft Windows 11 24h2, published on 12 May 2026. 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-2026-40369 and fix it if it is affected.\n\nWhat it is: CVE-2026-40369 is a high-severity memory corruption vulnerability in Microsoft Windows 11 24h2, published on 12 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-40369 exists.\n\nAffected product: Microsoft Windows 11 24h2. 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-2026-40369/ (Markdown: https://insights.sbomify.com/CVE-2026-40369/index.md)","id":"CVE-2026-40369","markdown":"https://insights.sbomify.com/CVE-2026-40369/index.md","name":"CVE-2026-40369","record":{"aliases":["GHSA-4qhv-qjg6-r699"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["privilege_escalation"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Windows Kernel","requires_auth":"low_privilege","summary":"A heap-based buffer overflow in the Windows Kernel allows an authorized local attacker to elevate privileges.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"windows_11_24h2","vendor":"microsoft"},{"product":"windows_11_25h2","vendor":"microsoft"},{"product":"windows_11_26h1","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-822","name":"Untrusted Pointer Dereference"}],"description":"Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-05-13","github_poc":7,"max_poc_stars":291,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-05-13T20:56:15Z","kind":"github_poc","ref":"https://github.com/orinimron123/CVE-2026-40369-EXPLOIT","stars":291,"title":"Full exploit code for CVE-2026-40369 - A Windows kernel arbitrary write vulnerability that allows browser sandbox escape from all browsers render process sandbox"},{"date":"2026-09-28T18:55:22Z","kind":"github_poc","ref":"https://github.com/ZeroDayEvil/CVE-2026-40369-EXPLOIT","stars":24,"title":"🛡️ Official AI Security Tool module for CVE-2026-40369 (Windows NtQuerySystemInformation Class 253 Arbitrary Kernel Address Increment LPE Primitive)."},{"date":"2026-05-22T19:44:45Z","kind":"github_poc","ref":"https://github.com/piffd0s/ntoskrnl-metadata","stars":4,"title":"eprocess offset puller for relevant member offsets and function addresses for cve-2026-40369"},{"date":"2026-06-18T16:16:17Z","kind":"github_poc","ref":"https://github.com/0xredash/CVE-2026-40369","stars":2,"title":"CVE-2026-40369"},{"date":"2026-05-21T22:00:37Z","kind":"github_poc","ref":"https://github.com/ercihan/CVE-2026-40369","stars":0,"title":null},{"date":"2026-06-23T02:37:58Z","kind":"github_poc","ref":"https://github.com/CCELEND/CVE-2026-40369","stars":0,"title":"CVE-2026-40369本地权限提升漏洞exp"},{"date":"2026-09-08T07:51:26Z","kind":"github_poc","ref":"https://github.com/dbgbgtf1/cve-2026-40369-exploit","stars":0,"title":"Exploit inspired by `https://voidsec.com/cve-2026-40369-browser-sandbox-escape/`. Use Feature_RestrictKernelAddressLeak and forge token to Elevate privileges"}],"tier":"weaponised"},"has_fix":null,"headline":"Windows Kernel Elevation of Privilege Vulnerability","id":"CVE-2026-40369","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"microsoft:windows_11_24h2","products":["microsoft:windows_11_24h2","microsoft:windows_11_25h2","microsoft:windows_11_26h1","microsoft:windows_server_2025"],"type":"memory_corruption","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"SQL Server Remote Code Execution Vulnerability","id":"CVE-2026-40370"},"packages":[],"prev":{"headline":"Microsoft SharePoint Server Remote Code Execution Vulnerability","id":"CVE-2026-40368"},"products":["Windows 11 Version 24H2","Windows 11 Version 25H2","Windows 11 version 26H1","Windows Server 2025","Windows Server 2025 (Server Core installation)"],"published":"2026-05-12","related":[{"cvss_score":7.8,"headline":"Microsoft Windows Link Following","id":"CVE-2025-60710","kev_date_added":"2026-04-13","published":"2025-11-11"},{"cvss_score":9.8,"headline":"Remote Desktop Client Remote Code Execution Vulnerability","id":"CVE-2026-54990","kev_date_added":null,"published":"2026-07-14"},{"cvss_score":9.8,"headline":"Windows Graphics Component Remote Code Execution Vulnerability","id":"CVE-2025-50165","kev_date_added":null,"published":"2025-08-12"},{"cvss_score":9.8,"headline":"Windows NTLM V1 Elevation of Privilege Vulnerability","id":"CVE-2025-21311","kev_date_added":null,"published":"2025-01-14"},{"cvss_score":8.8,"headline":"Windows SmartScreen Security Feature Bypass Vulnerability","id":"CVE-2026-108463","kev_date_added":null,"published":"2026-10-13"},{"cvss_score":8.8,"headline":"Windows Image Acquisition Remote Code Execution Vulnerability","id":"CVE-2026-83523","kev_date_added":null,"published":"2026-10-13"},{"cvss_score":8.8,"headline":"Microsoft Windows Media Foundation Remote Code Execution Vulnerability","id":"CVE-2026-62744","kev_date_added":null,"published":"2026-09-08"}],"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-10","vendors":["Microsoft"]},"summary":"A heap-based buffer overflow in the Windows Kernel allows an authorized local attacker to elevate privileges.","url":"https://insights.sbomify.com/CVE-2026-40369/"}