{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-83781 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-83781 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-83781 is a high-severity vulnerability in Microsoft Windows 11 Version 23H2, published on 13 Oct 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-2026-83781 and fix it if it is affected.\n\nWhat it is: CVE-2026-83781 is a high-severity vulnerability in Microsoft Windows 11 Version 23H2, published on 13 Oct 2026. 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-2026-83781 in the wild and no public exploit code.\n\nAffected product: Microsoft Windows 11 Version 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-2026-83781/ (Markdown: https://insights.sbomify.com/CVE-2026-83781/index.md)","id":"CVE-2026-83781","markdown":"https://insights.sbomify.com/CVE-2026-83781/index.md","name":"CVE-2026-83781","record":{"aliases":["GHSA-vmxj-c2f6-mf32"],"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 authorized local attacker can elevate privileges due to improper null termination in the Windows Program Compatibility Assistant Service.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[],"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-170","name":"Improper Null Termination"}],"description":"Improper null termination in Windows Program Compatibility Assistant Service allows an authorized attacker to elevate privileges locally.","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 Program Compatibility Assistant Service Elevation of Privilege Vulnerability","id":"CVE-2026-83781","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Windows Shell Remote Code Execution Vulnerability","id":"CVE-2026-83782"},"packages":[],"prev":{"headline":"Windows CCFFilter Driver Remote Code Execution Vulnerability","id":"CVE-2026-83780"},"products":["Windows 11 Version 23H2","Windows 11 Version 24H2","Windows 11 Version 25H2","Windows 11 Version 26H2","Windows 11 version 23H2","Windows 11 version 26H1","Windows Server 2022","Windows Server 2025","Windows Server 2025 (Server Core installation)"],"published":"2026-10-13","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"total"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["Microsoft"]},"summary":"An authorized local attacker can elevate privileges due to improper null termination in the Windows Program Compatibility Assistant Service.","url":"https://insights.sbomify.com/CVE-2026-83781/"}